Two identical metal balls are suspended by insulating threads. Both balls have the same net charge. In this problem, do not assume the balls are point charges.
Answers
In this situation, both balls will exert electrostatic force on each other in the first example.
How to calculate charge? The two balls will repel each other due to this electrostatic force.Aside from that, there will be a downward gravitational force on the two balls.Now we know that as the electrostatic force of repulsion between two balls increases, so will the angle between the two balls as the horizontal force separates the two balls.Part b)
We know that the net electrostatic force between two balls depends on the product of two charges, therefore as we reduce the charge on one ball, the net electrostatic force between two balls decreases.As a result, the angle between the two balls decreases and the two balls move closer together.Also, we can see from the free body diagram of two balls that all of the forces acting on the balls are the same, hence the angle formed by the ball with the vertical is the same for both balls.As a result, the angle formed by ball l with the vertical is equal to the angle formed by ball 2 with the vertical.For more information on charge kindly visit to
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Complete question : Two identical metal balls are suspended by insulating threads. Both balls have the same net charge. In this problem, do not assume the balls are point charges. a. Draw a separate free-body diagram for each ball. Label the forces to indicate: - the object exerting the force, - the object on which the force is exerted, - the type of force (gravitational, normal, etc.), and - whether the force is a contact or a noncontact force. b. Suppose the charge on the second ball is reduced slightly, so that it is less than that on the first ball. Predict whether the angle that ball l makes with the vertical will be greater than, less than, or equal to the angle that ball 2 makes with the vertical. Explain. Sketch your answer above. Name Ball I Ball 2 Free-body diagram Free-body diagram for ball I for ball 2 - - Ball I Ball 2 How does the free-body diagram for each ball in this case compare to the corresponding freebody diagram that you drew in part a
Related Questions
phase change in which a gas is converted directly to a solid
Answers
The process of conversion of a gas directly to solid state is called deposition.
Deposition is when the gas is directly converted to solid without going through the liquid phase is called deposition. An example for this is the formation of frost, here water vapor is deposit as ice. Usually crystals are formed during deposition. Deposition is a thermodynamic process, an exothermic reaction.
The opposite process of deposition is sublimation, where the solid directly changes to gas. Deposition is used for industrial coating processes. This is evaporation deposition, a solid material is heated to gaseous state in a low-pressure chamber, this gas molecules travels and deposits and coats the target surface.
So the process of conversion of gas to solid is called deposition.
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a 0.00720-kg bullet is fired straight up at a falling wooden block that has a mass of 2.23 kg. the bullet has a speed of 601 m/s when it strikes the block. the block originally was dropped from rest from the top of a building and had been falling for a time t when the collision with the bullet occurs. as a result of the collision, the block (with the bullet in it) reverses direction, rises, and comes to a momentary halt at the top of the building. find the time t.
Answers
It will take the box 0.96275 sec of releasing before hitting the bullet to come at rest at the top of the building.
Let's in the down direction as negative and an upward direction as positive.
m = mass of the bullet = 0.00720 kg
M = mass of the wooden block = 2.23 kg
u = velocity of the bullet before striking the block = 601 ms⁻¹
V= velocity of the wooden block before the collision
Vc= velocity of the wooden block + bullet after collision = V
Using conservation of momentum
mu - MV = (m+M)V
(0.00720)(601) - 2.23 = (0.00720 + 2.75)*V
V = 2.0972/2.2228
V = 0.9435 ms⁻¹
Consider the motion of the wooden block in free-fall after being dropped:
V0 = Initial velocity of the wooden block = 0 ms⁻¹
a = acceleration of the wooden block = - 9.8 ms⁻²
t= time of travel
Vf= Final velocity of the wooden block = - 0.9.435 ms⁻¹
On the basis of the above set of data, we can use the kinematics equation
Vf = vo +at
-0.9435 = 0+ (-9.8)t
t = 0.96275
t = 0.96275 sec
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which of the following is a true statement? select one: a. lightning cannot strike the same place twice during a thunderstorm b. thunder from distant storms is often not heard because of sound dissipation and the curvature of the earth. c. the most common type of lightning is the cloud-to-ground strike d. it is only possible to be struck by lightning when it is raining
Answers
The statement that is a true statement is the statement B. Thunder from distant storms is often not heard because of sound dissipation and the curvature of the earth.
About ThunderstormThunderstorms are ended up causing by lightning. On sometimes, lightning might be seen but still no thunder might well be heard. It is as a result of the distance away (more than 20 km away) the thunder is. Sound dissipation and the curvature of the earth are the reasons this condition occurs. (option B is correct)
Misconceptions About ThunderstormsA. Lightning cannot strike the same place twice during a thunderstorm
According to some research, lightning can strike the same place three times. So, it is possible for a bolt of lightning to strike the same place twice during a thunderstorm.
C. The most common type of lightning is the cloud-to-ground strike
This statement is incorrect. The most common type of lightning is Intra-Cloud, cloud-to-cloud strike
D. It is only possible to be struck by lightning when it is raining
Lightning that happens when there isn't any surrounding rain is called dry lightning. It is also known as "a bolt from the blue," or lightning that comes from a clear blue sky. So, it is possible for lightning to strike without rain.
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Which planet has extremely high wind speeds ( up to 1,500 miles per hour ) , at the top of its atmosphere ?
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The planet with the highest wind speeds in its atmosphere is Jupiter.
What is planet?A planet is a celestial body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighboring region of planetesimals. The eight planets in our Solar System are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. There are also several dwarf planets, such as Pluto, Ceres and Eris.
The winds on Jupiter can reach speeds of up to 1,500 miles per hour, and are the fastest in the solar system. These winds are caused by the planet's incredibly strong gravity, and can create storms that can last for years. The winds are also believed to be responsible for the planet's iconic stripes, which are created by the swirls of clouds created by the winds. The wind speeds on Jupiter are about five times the speed of Earth's strongest hurricanes.
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What is the approximate measure of angle f? use the law of sines to find the answer. 11.5° 44.4° 68.0° 81.9°
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The approximate measure of angle f is 44.4°
Why do we measure angles?Angle measures are helpful not just for academic purposes but also for understanding and using the objects around us. They may aid with spatial knowledge and the link between numbers and measurements.
Goniometer: an instrument for measuring angles, especially useful in crystallography.
A radian is the name for the angle,, that results from this circumstance. A radian is the unit of measurement for an angle that, when represented by a central angle, subtends an arc whose length is equal to the circle's radius.
You only need to utilise sine.
The opposite/hypotenuse of Sin(F) is 28/40.
F = sin ^ -1(28/40)
Connect the calculator.
44.4
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Answer: B
Explanation: 44.4°
Say something worth 20 points, just for fun!
Answers
20 Funny inspirational worth quotes for work and life :
If at first you don’t succeed, then skydiving definitely isn’t for you.” – Steven Wright.
I find television very educational. Every time someone turns it on, I go in the other room and read a book.” – Groucho Marx
What is meant by quotes?
Kyle Chandler once said, "Opportunity doesn't knock; it knocks when you beat down the door.Don't stress about the end of the world today. In Australia, tomorrow has already passed by Charles M. Schulz.Eugene Ionesco Decouvertes once said, "The inquiry itself enlightens, not the solution.Although life is a shipwreck, we must remember to throw in the lifeboats by VoltaireEvery time I hear someone complain that life is difficult, I find myself wanting to inquire, "Compared to what? Sydney HarrisThe key to success is in the broken elevator. The steps will have to be used, one step at a time. Joe Girard.The brain is a marvelous organ; it begins to function as soon as you wake up and continues until you enter the office by Robert Frost.According to George Bernard Shaw, "We don't stop playing because we get older; we get older because we stop playing.Mark Twain once said, "The finest way to cheer yourself up is to try to cheer somebody else up."Unless you're a cheese, age doesn't matter by Billie BurkeYou receive even less when you settle for less than you deserve, according to Maureen Dowd.Henry Wadsworth Longfellow once said, "It takes less time to do things properly than to explain why you did them poorly.Malcolm Forbes once said, "The secret to success is not through achievement but through excitement."Louis Agassiz said, "I can't afford to squander time trying to get money.Robert Bloch once said, "Friendship is like peeing on yourself: everyone can see it, but only you experience the wonderful pleasure it brings.You haven't been in the dark with a mosquito if you think you're too small to be successful, according to Betty Reese.The distinction between brilliance and ignorance is that genius has its bounds.Always get a loan from a downer. He won't anticipate a response. Oscar WildeTo learn more about quotes refer to
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At what position the potential energy is zero and the kinetic energy is at maximum?
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The potential energy is zero when the kinetic energy is maximal. This occurs when the velocity is at its maximum and the mass is in equilibrium. The forces acting on the body are solely.
determined by the beginning and ending locations of the body in space. These conservative forces may be represented at each place in space by vectors defined as gradients of a certain scalar function called potential energy.Although it has connections to Greek philosopher Aristotle's notion of potentiality, the word potential energy was coined by the 19th-century Scottish engineer and physicist William Rankine. Potential energy is connected with forces that operate on a body in such a way that the total work done by these forces on the body is determined only by the body's beginning and ending locations in space. These conservative forces may be represented at each place in space by vectors defined as gradients of a certain scalar function called potential.
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At what point is the kinetic energy minimum?
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Hint The velocity of the projectile motion varies with position; kinetic energy is directly related to velocity, hence kinetic energy is lowest when velocity is lowest.
When a missile reaches its greatest height, its velocity is the slowest. In physics, an object's kinetic energy is the energy it has as a result of its motion. It is defined as the amount of work required to accelerate a body of a given mass from rest to a certain velocity. The body retains its kinetic energy after gaining it during acceleration until its speed changes. Kinetic energy is the energy that an item has as a result of its movement. If we wish to accelerate an item, we must apply force to it. Using force demands us to put in effort. After work is completed, energy is transferred to the item, and the thing moves at a new constant speed.
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Resistance of a heating device is 115 Ω, if this device is connected to 230 V supply.
a) Calculate the heat energy produced by it in 20 minutes. 2
b) Calculate the current flowing through this circuit.
Answers
A. The heat energy produced in 20 minutes is 552000 J
B. The current flowing through the circuit is 2 A
A. How do I determine the heat energy?The heat energy produced in 20 minutes can be obtained as illustrated below:
Resistance (R) = 115 Ω Voltage (V) = 230 V Time (t) = 20 minutes = 20 × 60 = 1200 s Heat energy (E) = ?E = V²t / R
E = (230² × 1200) / 115
E = 63480000 / 115
E = 552000 J
Thus, we can conclude that the heat energy is 552000 J
B. How do I determine the current?The current flowing through the circuit can be obtain as follow:
Resistance (R) = 115 Ω Voltage (V) = 230 V Current (I) =?Voltage (V) = Current (I) × resistance (R)
230 = Current × 115
Divide both sides by 115
Current = 230 / 115
Current = 2 A
Thus, the current flowing in the circuit is 2 A
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1. What is the equation for impulse used in the image?(use the equation in the image)
2. What does the variable stand for?
3 how does the equation help to explain why an airbag helps reduce the chance and/or severity of injuries during an automobile crash?
Answers
1. The equation for impulse used in the image is: J = Ft
2. Where: J = impulse of force; F = force and t = time interval.
3. Airbag increases the time of impact, that's why, for same impulse, the amount force lessen.
What is impulse?In physics, the term "impulse" is used to characterize or measure the impact of force operating gradually to alter an object's motion. It is often stated in Newton-seconds or kilograms per second and is denoted by the symbol J.
Impulse of force is = force applied × time interval = change in momentum.
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A force f of strength 20 n acts on an object of mass 3 kg as it moves a distance of 4 m. If f is perpendicular to the 4 m displacement, the work it does is equal to.
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A force f of strength 20 N applied on an object having mass of 3 kg as it moves a distance of 4 m. If f is perpendicular to the 4 m displacement, the work it does is equal to Zero .
What is displacement?A displacement is a vector whose length is the shortest gap between a moving point P's initial and final positions.
An object's displacement is equal to its velocity times its acceleration times its time squared plus one-half (t2).
Given:
Force f of strength 20 n
object of mass 3 kg
distance of 4 m
f is perpendicular to the 4 m displacement
Hence if the Force f applied is perpendicular to the displacement the work done by the force will become Zero.
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a 3.2 kg cat is moving to the right with a velocity of 3.7 m/s when a 0.5 kg mouse moving with a velocity of 5.2 m/s to the left jumps on his back. what is the final velocity of the cat-mouse system after the collision?
Answers
The final velocity of both will be 3.9 m/s where 3.2 kg of cat and .5 kg of rat both run, after the collision of both where the initial velocity of cat and rat was 3.7 m/s and 5.2 m/s respectively
For collision in 2 bodies, elastically momentum remains conserved. It is followed by the principle that Momentum remains conserved in elastic collision so, m1*v1+ m2*v2= m1*u1+ m2*u2
As final Mass = m1+m2 as one body So, m1*u1+ m2*u2 = (m1+m2)V3
where V3 is the final velocity of both as a single body So
m1 = 3.2 kgu1 = 3.7 m/s m2 = 0.5 kgu2= 5.2 m/s(m1+m2) = 3.7 kgso the Final velocity of the body (cat and rat) will be
V3 = (3.2 * 3.7 + 0.5* 5.2)/3.7
V3 = 3.9 m/s
Now cat with a rat will run with a velocity of 3.9 m/s as it has the momentum of the rat and itself.
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HELP ME ASPP PLEASE THANK YOU
Answers
Answer:
The answer is chemical energy
Study Figure 6 which shows the electric field lines around a negatively charged metal sphere. How does the diagram show that electric field strength decreases further away from the metal sphere?
Answers
The lines are pointing away from the charge hence the diagram show that electric field strength decreases further away from the metal sphere.
What is the electric field?Let us note that the electric field has to do with the region in space where there is the influence of a charge can be felt. We know that the charge in the context of what we are discussing here could be negative or positive as the case may be.
We can see that the lines all point outside the charge and the implication of this is that distance would increase and as such the influence of the charge would also be found to fall off with the increasing distance.
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A jumping spider's movement is modeled by a parabola. The spider makes a single jump from the origin and reaches a maximum height of 20 mm halfway across a horizontal distance of 160 mm.
Answers
The spider's motion serves as an example of a parabola,
The equation of the parabola is y = a(x-h)² + k
The focus of the parabola is Focus = (80, -60)
The directrix is y = 100
The axis of symmetry is x = 80
A parabola is difficult to explain.A set of points in a plane with the same separation from a given point and a given line in that plane is known as a parabola. The given point and the line are referred to as the focus and directrix, respectively. The parabola's vertex is the center of the perpendicular segment running from the focus to the directrix.
(a). The equation the spider passes through the origin is
we have,
(x, y) = (0, 0)
The spider can jump up to 20 mm, or 160 mm, in the middle.
Thus, the vertex is,
(h, k) = (80, 20)
A parabola's equation is,
y = a(x-h)² + k
Thus, we have,
0 = a(0-80)² + 20
0 = 6400a + 20
Take 20 off both sides
6400a = -20
a = -1/320
Substitute a = -1/320 and (h, k) = (80, 20) in
y = a(x-h)² + k
y = -1/320 (x - 80)² + 20
(b) The axis of symmetry, directrix, and focus
A parabola's point of focus is,
Focus = (h, k+p)
p = 1/4a
Thus, we have
p = 1/4×-1/320
p = -320/4
p = -80
Focus = (h, k+p)
Focus = (80, 20-80)
Focus = (80, -60)
The symmetry axis is,
x = h
Thus, we have,
x = 80
As for the directrix
y = k-p
y = 20+80
y = 100.
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ball is thrown straight up. At the top of its trajectory, its A. velocity is non-zero and acceleration is zero. B.velocity is zero and acceleration is also zero. C.velocity is zero and acceleration is non-zero. D.velocity is non-zero and acceleration is also non-zero.
Answers
Ball is thrown straight up, at the top of its trajectory, its C.) velocity is zero and acceleration is non-zero.
What happens when ball is thrown straight up?At the top of it's trajectory, ball's velocity is zero. This is because the ball is at highest point in its trajectory and has stopped moving upward and is about to start moving downward. At this point, only force acting on the ball is gravity, which is pulling it downwards.
The ball's velocity is zero as it is not moving in any direction and it has reached its highest point and is about to change direction. The acceleration of the ball is still downward and it is equal to the acceleration due to gravity (approximately 9.8 m/s^2).
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the mineral group that makes up the largest percentage of rock-forming minerals and comprises over 90% of the earth’s crust material is
A. Silicate minerals
B. oxides C. carbonates D. metals
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The mineral group that makes up the largest percentage of rock-forming minerals and comprises over 90% of the earth's crust material is Silicate minerals.
Over 90% of the crust of the Earth is made up of the roughly 1,000 silicate minerals. The largest mineral group by far is the silicate family. The two silicate minerals that are most prevalent are feldspar and quartz. Both minerals are very widespread rock-forming minerals. This pyramid-shaped structure is frequently bonded to additional elements, such as calcium, iron, and magnesium, to produce the great range of silicate minerals. There are six different ways to assemble silica tetrahedrons to produce various silicates. Tetrahedrons can be used singly, in pairs, in single and double chains, in the shape of vast flat sheets of pyramids, or in three-dimensional connections. Atoms from one type of element exclusively are found in native elements. This group of minerals only contains a few minerals.
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a satellite is in low circular orbit about earth(100 miles above the surface). how long does it take to make one revolution around earth?
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A satellite is in low circular orbit about earth (100 miles above the surface). The distance it travels to make one revolution around earth is 41,021 km
The circumference of a circle is given by:
C = 2 π r
Where:
C = circumference
r = radius of the circle
The position of the satellite is 100 miles above the earth's surface.
100 miles = 161 km
The radius is the earth is 6,371 km
Hence, the radius of the orbit of the satellite is:
r = 6,371 km + 161 km
r = 6,532
Therefore, the circumference of the circular orbit:
C = 2π x 6,532 = 41,021 km
Thus, the satellite will take the distance of 41,021 km when it makes one revolution around earth.
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An electric heater draws 12 a from a 120 v power source. How much power does the heater dissipate?.
Answers
An electric heater draws 12 a from a 120 v power source, the amount of power that is dissipated by the heater is 1440 W.
What is Power?Energy that is significantly transferred or converted over time can be referred to as power. Watt is used to measure power (W). With the aid of the following formula, it is typically calculable:
P = W/Δt.
The answer to this question depends on the context, but the formula below can be used to determine how much power is lost inside the heater:
P = V × I = 12 × 120 = 1440 W.
As a result, 1440 W of power is lost by the heater in accordance with the scenario.
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explain the concept of motion in terms of unbalanced forces acting on an object
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An unbalanced force acting on an object results in the object's motion changing. The object may change its speed up or slow down.
What is motion?Motion can be defined as the change of position of an object over a time. Motion is described in terms of displacement, distance, velocity, acceleration, time and speed
There are various types of motion such as :
Oscillatory RotationalTransactionalUniformNon-uniformPeriodicCircularLinearTherefore, friction is a force that resists the motion or the tendency toward motion between two objects in contact with each other.
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the particle is a proton. the field slows down the proton without deflecting it. what is the direction of the electric field? choose the best answer.
Answers
When a proton travels through a small hole in a plate with a uniform electric field, it slows down without being depleted. The direction of the electric field is to the: C. Left.
Why does the electric field direct to the left?The plate can be seen in the attached picture. When a proton passes through the plate, the electric field will be directed outward. As per the picture, to move outward, the direction of the electric field is to the left. Otherwise, if the particle that passes through is an electron, the electric field will be directed inward (to the right).
This question is incomplete. The complete query is as follows:
“A charged particle travels through a small hole in plate A+ and then towards plate B-. There is a uniform electric field between the plates. The particle is a proton. The field slows down the proton without deflecting it. What is the direction of the electric field? Choose the best:
(a) up
(b) down
(c) left
(d) right”
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A soccer player kicks a ball, applying a force of 1,000 newtons over a distance of 0. 2 meter. The ball travels 50 meters down the field before another player stops the ball. How much work was done during the kick?(1 point)
10 joules
50,000 joules
5,000 joules
200 joules
Answers
When the ball goes 50 meters across the field before being stopped by some other player, the work done even during kick equals 200 joules.
We know the formula of work done
W= fd
= 1000N × 0.2m
= 200 Joules.
Work completed When a force on an object as well as the object travels inside the direction of the force, the force is said to be doing work. The product of something like the force as well as the displacement of something like the item in the direction of the force equals the work done either by force.
If an item is displaced by something like a constant force F over a distance s, then work done mostly by force W = F × s = F s cos, where represents the smaller angle between F as well as s.
Work would be a scalar quantity with the S1 unit joule and the CGS unit erg.
Hence, the correct option is D.
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Determine which intermolecular forces are the dominant (strongest) forces for a pure sample of each of the following molecules by placing the molecules into the correct bins.
Answers
Dispersion force:- C₂H₆ Kr
Dipole-dipole force:- HCl CH₃Cl
Hydrogen bonding:- CH₃COOH NH₃
What is dispersion force?We are informed that the dispersion force exists in every molecule, but there are also two other forces that are stronger than and dominate the dispersion force. The first is the dipole-dipole interaction, which is present in poler molecules, and the second is the hydrogen bonding, which is present in molecules with electronegative atoms like O, N, and F. The hydrogen bonding force is the greatest of these forces, whereas the dispersion force is the smallest.
The strongest inter-molecular force in the CH₃Cl molecule is the dipole-dipole force since it is a polar molecule.The C₂H₆ molecule only has the dispersion force since it is a non-polar molecule.Since the NH₃ molecule is polar, it exhibits dipole-dipole attraction. Additionally, because there is an electronegative nitrogen atom present, hydrogen bonds are also formed. Because the hydrogen bond in NH₃ is stronger than the dipole-dipole forces, it is the most powerful bond.As a single molecule of the noble gas Kr, which only exists in kr, the London dispersion force is the only physical property that it possesses.As a polar molecule, HCl exhibits dipole-dipole force, which is the strongest force known to exist.Due to the electronegative nature of the oxygen atom in the CH₃COOH molecule, hydrogen bonding is present in this molecule and dominates all other forces, making hydrogen bonding the strongest bond in CH₃COOH.Dispersion force:- C₂H₆ Kr
Dipole-dipole force:- HCl CH₃Cl
Hydrogen bonding:- CH₃COOH NH₃
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The complete question is as follows:
what makes the earth different from the other worlds in the solar system that might have life (and something that makes life on earth fairly easy to detect from far away) is that only earth:
Answers
The earth different from the other worlds in the solar system that might have life (and something that makes life on earth fairly easy to detect from far away) is that only earth:
1. Has an atmosphere consisting of a mixture of oxygen and nitrogen that is
breathable for most life forms
2. Has liquid water in abundance on its surface.
3. Has a magnetic field that shields life from harmful radiation.
4. Has the right temperature range for life to exist.
5. Has a rich and diverse biosphere.
6. Has the ability to reflect light from its oceans, making it easy to detect from afar.
The solar system is the collection of the Sun, its planetary system of eight planets and various other objects in orbit around it. These include dwarf planets, moons, asteroids, comets, dust, and gas. The four inner planets, Mercury, Venus, Earth, and Mars, are composed mostly of rock and metal and are relatively close to the Sun. The four outer planets, Jupiter, Saturn, Uranus, and Neptune, are composed mainly of gas and ice, and are much farther from the Sun. The solar system also contains many smaller objects, such as asteroids, comets, and meteoroids.
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How is energy stored and transferred at 5 different points during the launch and flight of the trebuchet?
Answers
The way that the energy stored and transferred at 5 different points during the launch and flight of the trebuchet are:
Energy storage during the loading phase: When the trebuchet is loaded, the counterweight and the projectile are both raised to a high point on the frame. This increases the gravitational potential energy of the counterweight and the projectile.Energy transfer during the tensioning phase: As the trebuchet is tensioned, the energy stored in the counterweight and the projectile is transferred to the tensioned ropes, cables or chains. This causes the ropes or chains to stretch and store elastic potential energy.Energy transfer during the launch phase: As the trebuchet is released, the energy stored in the tensioned ropes, cables or chains is transferred to the counterweight and the projectile. The counterweight falls, releasing its gravitational potential energy and propelling the projectile forward.Energy transfer during the flight of the projectile: As the projectile flies through the air, the energy stored in the projectile is transferred to the air through friction and air resistance. This causes the projectile to slow down and lose altitude.Energy transfer during the impact phase: As the projectile strikes its target, the energy stored in the projectile is transferred to the target, causing damage or destruction. Any remaining energy in the projectile is absorbed by the target or dissipated as heat or sound.What is the Energy about?Energy is a property of matter that allows it to do work. It is a scalar quantity, meaning it has only magnitude and no direction.
Energy can take many forms, including kinetic energy (the energy an object possesses due to its motion), potential energy (the energy an object possesses due to its position or state), and thermal energy (the energy an object possesses due to its temperature).
Therefore, Energy can also be classified as being either non-renewable or renewable. Non-renewable energy sources, such as fossil fuels, are finite and will eventually run out, whereas renewable energy sources, such as solar or wind power, are replenished naturally and can be used indefinitely.
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A 600 kg cart is connected to a 200 kg wagon which are travelling together. The total momentum of the cart-wagon system is 1600 kg*m/s. The wagon and cart then separate so the cart has a final velocity of 3 m/s. What is the final total momentum of the cart wagon system?
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The final total momentum of the cart and the wagon system is 1600 kg*m/s.
What is the momentum?We know that the momentum of the system has to do with the product of the mass and the velocity of a body. In this case, we know that the momentum of the cart and the wagon system can be obtained by the use of the principle of the conservation of linear momentum.
From the principle of the conservation of linear momentum, we can see that the momentum before collison = Momentum after collision as such the momenmtum of the object does not change.
Hence, the principle of conservation of momentum shows us that the momentum does not change.
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Physical science help pls
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The amount of energy a battery can hold is known as its power capacity. Watt-hours are a common way to measure this power (the symbol Wh).
How do you calculate resistor color code?Current times voltage equals power. This relationship demonstrates how voltage and current are crucial in determining what a battery is good for. The higher the power, the quicker the rate at which a battery can perform work.
P = E/t, where P stands for power, E for energy, and t for time in seconds, is the formula. According to this equation, power is the amount of energy consumed in a given amount of time.
Read the colour codes on the resistor while holding it with the gold or silver band to the right. From the bands on the resistor, choose the appropriate colour code. From left to right, read the colours. Now the resistance value depending on the supplied colour code is visible.
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After a certain pesticide compound is applied to crops, its decomposition is a first-order reaction with a half-life of 32. 5 days. What is the rate constant, k, for the decomposition reaction?.
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The rate constant, k, for the decomposition reaction will be 0.0214/day. The half-life of a first-order reaction is the amount of time it takes for the concentration of a reactant to decrease by half.
A first-order reaction is a type of chemical reaction in which the rate of the reaction is directly proportional to the concentration of one of the reactants. The rate constant, k, is a measure of the speed of the reaction and is specific to the reaction conditions (temperature, pressure, etc.).
It is a useful concept because it is a constant for a given reaction, regardless of the starting concentration of the reactant.
The half-life, t1/2, of a first-order reaction is given by the equation: t1/2 = 0.693/k
So, in this case, since the half-life is 32.5 days, we can find k by rearranging the equation to:
k = 0.693/32.5 days = 0.0214/day
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The figure shows a system consisting of three blocks, a light frictionless pulley, and light connecting ropes that act horizontally on the upper two blocks. The 9.0-kg block is on a perfectly smooth horizontal table. The surfaces of the 12-kg block are rough, with µk = 0.30 between the 12-kg and 9.0-kg blocks. The mass M of the hanging block is set so that it descends at a constant velocity of 3.25 m/s.
(a) What is the mass M of the hanging block?
(b) The mass M is now changed to 5.0 kg, causing it to accelerate downward after it is released. What is the acceleration of the hanging mass?
Answers
a) The mass M of the hanging block is 2.7 kg.
b) When the mass M is changed to 5.0 kg, the acceleration of the hanging mass is 5.39 m/s².
What is friction?
The resistance that surfaces in touch provide to motion when they pass one another is referred to as friction.
(a) The mass M of the hanging block is = (0.30 × 9.0 kg × 9.8 m/s²) ÷ ( 9.8 m/s²)
= 2.7 kg.
(b) When the mass M is changed to 5.0 kg, the acceleration of the hanging mass is = {5.0×9.8 + 0.30 × 9.0 kg × 9.8 m/s²) ÷ ( 9.0 kg + 5.0 kg)
= 5.39 m/s².
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g a cheetah can accelerate from rest to a speed of 20.5 m/s in 5.50 s. what is its acceleration (in m/s2)?
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The cheetah's acceleration (in m/s2) is: 3.72 m/s²
What is acceleration?
It is a physical quantity that indicates the variation of velocity as a function of time, it is expressed in units of distance per time squared e.g.: m/sec2 ; km/h2
The formula and procedure we will use to solve this exercise is:
a = (vf - vi) /t
Where:
a = accelerationvf = final velocityvi = initial velocityt = timeInformation about the problem:
vi= 0 m/svf = 20.5 m/st = 5.50 sa=?Applying the acceleration formula we have:
a = (20.5 m/s - 0 m/s) /5.50 s
a = (20.5 m/s) /5.50 s
a = 3.72 m/s²
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