The largest that the x-component of the wave can be is zero.
As the electromagnetic wave is traveling in the x direction and the y-component of the electric field is given, it means that there is no x-component of the electric field.
An electromagnetic wave is a transverse wave, which means that the oscillations of the electric and magnetic fields are perpendicular to the direction of propagation of the wave.
ln this case, the wave is traveling in the x direction, and the equation for the y-component of the electric field is given.
This means that the oscillations of the electric field are in the y direction and not in the x direction.
Therefore, it can be inferred that there is no x-component of the electric field in this wave. Since the x-component of the electric field is zero, it means that the largest that it can be is zero.
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Why potential at infinity is zero?
The electric potential is taken from infinity because the fraction 1/x is zero only when x equals, as the fraction tends towards zero and the denominator tends towards infinity potential.
is proportional to 1/r2 so no matter how far you are from the field there is still some influence from it that decreases exponentially with distance (radius). Zero is assumed to be an infinitely large distance from the center of the Earth, resulting in negative values for Gravitational Potential s proportional to 1/r2, implying that no matter how far you are from the field, there is still some influence from it, which decreases exponentially with distance (radius). The electric potential at the reference location is, by definition, zero units. In most cases, the reference point as the fraction tends towards zero and the denominator tends towards infinity potential.
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two blocks, unconnected to each other, are at rest on a frictionless surface. the mass of block a is twice the mass of block b. you apply the same force f to both blocks, for a distance d for block a, and a distance 2d for block b. which is true about the kinetic energies of the blocks after they are pushed the given distances?
The kinetic energy of Block A after it is pushed the given distance is twice the kinetic energy of Block B.
The work done on a body is equal to the change in kinetic energy of the body.
Work done on Block A = Change in kinetic energy of Block A
Fds = ½ mv2 (1)
Work done on Block B = Change in kinetic energy of Block B
F(2d) = ½ mv2 (2)
Since the force applied to both blocks is the same, we can equate the work done on both blocks:
Fd = F(2d)
d = 2d
From equation (1), the mass of Block A is twice the mass of Block B, so
m1 = 2m2
Substituting this in equation (2), we get
F(2d) = ½ (2m2) v2
2Fd = m2v2
Therefore, the kinetic energy of Block A is twice the kinetic energy of Block B.
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a man take 16 breaths per minute at 18 degree centigrade and 760 mm Mercury what is his rate of breathing on a mountain top where the temperature is 5 degrees centigrade and the pressure is 240mm mercury we can assume that he needs the same mass of air per minute
Answer:
Explanation:
The rate of breathing is affected by the environment's pressure and temperature. The pressure and temperature are lower at greater altitudes. As a result, the man's lungs will have to work harder to breath the same volume of air. We may use the following calculation to compute the new rate of breathing:
(Pressure1 x Temperature1) x Rate of breathing1 = (Pressure2 x Temperature2) x Rate of breathing1
Where Pressure1, Temperature1, and Rate of breathing1 are the pressure, temperature, and rate of breathing at sea level (760mm Hg, 18 degrees Degrees c, and 16 breaths per minute), and Pressure2, Temperature2 are the pressure and temperature at the mountain top (760mm Hg, 18 degrees Celsius, and 16 breaths per minute) (240mm Hg, 5 degrees C)
Plugging in the values, we get:
Rate of breathing = (760 x 18) / (240 x 5) x 16
Rate of breathing = 4 x 16
Rate of breathing = 64 breaths per minute
So the man's rate of breathing at the mountain top would be 64 breaths per minute. This means that his lungs would have to work 4 times harder to inhale the same mass of air as at sea level due to the lower pressure and temperature at the mountain top.
You are watching an object that is moving in shm. When the object is displaced 0. 600 m to the right of its equilibrium position, it has a velocity of 2. 20m/s to the right and an acceleration of 8. 40m/s2 to the left.
An object is moving in simple harmonic motion. Its current position is 0.6 m to the right of its equilibrium. The object will move 0.24 m further to the right before it stops momentarily and then starts to move back to the left.
The position function of simple harmonic motion can be modeled by:
x(t) = A sin (ωt)
Where:
A = amplitude
ω = angular frequency
t = time
Amplitude is the farthest displacement before the object move back to the left or right.
Substitute x(t) = 0.6
0.6 = A sin (ωt)
Take the derivative:
v(t) = Aω cos(ωt)
Take the derivative again:
a(t) = v(t)' = -Aω² sin(ωt)
-8.40 = - Aω² sin(ωt)
x(t) / a(t) = A sin(ωt) / ( -Aω² sin(ωt))
0.60 / (-8.40) = -1 / ω²
ω² = 8.4/0.6 = 14
ω = 3.74 rad/s
x(t) / v(t) = A sin(ωt) / Aω cos(ωt)
0.6 / 2.2 = tan(3.74t) /3.74
tan(3.74t) = 1.02
3.74 t = 0.795
t = 0.212 s
x(0.212) = A sin(3.74 x 0.212)
A = 0.84 m
The farthest position from the equilibrium is 0.84 m, hence the object will move 0.84 - 0.6 = 0.24 meters farther before it moves back to the left.
Your question is incomplete, most likely it was:
You are watching an object that is moving in shm. When the object is displaced 0. 600 m to the right of its equilibrium position, it has a velocity of 2. 20m/s to the right and an acceleration of 8. 40m/s2 to the left. How much farther from this point will the object move before it stops momentarily and then starts to move back to the left?
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archimedes' principle can be used to determine the specific gravity of a solid using a known liquid. likewise, this can be done in reverse to find the density of an unknown liquid. it is found that a 4.2 kg chunk of aluminum has an apparent mass of 2.1 kg when submerged in a particular liquid. calculate the density of the liquid, in kg/m3
The density of the liquid, calculated by using Archimedes' Principle is 4.61 kg/m³.
To calculate the density of the liquid, we can use Archimedes' Principle, which states that the buoyant force of an object immersed in a liquid is equal to the weight of the liquid displaced by the object.
Therefore, we can calculate the density of the liquid by knowing the mass of the object and the volume of liquid displaced.
We can use the following equation to calculate the density:
Density = (Mass of Object)/(Volume of Liquid Displaced)
We know the mass of the object is 4.2 kg and the apparent mass of the object when submerged is 2.1 kg. Therefore, the volume of liquid displaced is (4.2 kg - 2.1 kg) = 2.1 kg.
Therefore, the density of the liquid is (2.1 kg)/(2.1 kg) = 4.61 kg/m³.
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a ball having a mass of 4 kg, and a velocity of 8 m/s, travels to the east along the x-axis. at the origin, the ball makes a change and changes direction to the north and has a new velocity of 6 m/s. find the impulse and the change in the momentum.
The acceleration and change in momentum are both 40 kg m/s.
Momentum is the result of a particle's mass and velocity. Being a vector quantity, momentum possesses both magnitude and direction. According to Isaac Newton's second equation of motion, the force applied on a particle is equal to the time rate of change of momentum.
Momentum shift in opposite directions:
Let the x direction point eastward and the y direction point northward.
As momentum shifts in the direction of x, we get:
Δpₓ = mvf - 0
Δpₓ = 4 * 6 = 24 kg m/s
As momentum shifts in the direction of a, we get:
Δpₐ = 0 - mvii
Δpₐ = (-4) * 8 = -32 kg m/s
Momentum and impulse alterations:
The overall momentum shift is,
Δp = √24² + 32²²
Δp = 40 kg m/s
The change in momentum is what constitutes the impulse, hence the impulse:
I = Δp = 40kg m/s
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a block initially at rest on a horizontal, frictionless surface is accelerated by a constant horizontal force of 5.0 newtons. if 15 joules of work is done on the block by this force while accelerating it, the kinetic energy of the block increases by
The block gains 15 Joules of kinetic energy, to be precise.
What is the kinetic energy?Horizontal force of 5.0 newtons.
The sum of an object's force and its displacement is known as the work done.
Mathematically,
w = f * s
where,
completed work
F stands for force.
Displacement equals s
Kinetic energy is the energy that an item possesses just by virtue of its motion.
In the question, it is stated that a block has been subjected to 15 Joules of work; our task is to determine how much the block's kinetic energy has changed.
Having said that,
Work performed on the item equals a change in its kinetic energy.
This results in a 15 Joule increase in kinetic energy.
The block gains 15 Joules of kinetic energy, to be precise.
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When calculating torque the perpendicular distance or lever arm is defined as?
When calculating the torque, the lever arm is defined as the perpendicular distance from the axis of rotation to the line of action of the force.
The twisting force that propels an object's rotation around an axis is measured by torque. It is computed by dividing the force exerted on an item by the lever arm, or perpendicular distance between the application point and the axis of rotation. The moment arm is another name for this distance. The standard units for measuring torque are (Nm). It is crucial to comprehend torque and how it is calculated in disciplines like engineering and physics.
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2a. Explain the five steps and how you can use them to solve a word problem.
2b. How much time does it take for a bus that has a velocity of 10 m/s to go a distance of 1,475 m?
The time it takes for a bus that has a velocity of 10m/s to go a distance of 1475m is 147.5s.
How to calculate speed?Speed is the rate of motion or action, specifically the magnitude of the velocity i.e. the rate distance traversed in a given time.
The speed of a moving object can be calculated by dividing the distance moved by the time taken to travel the distance as follows:
Speed = distance ÷ time
According to this question, a bus that has a velocity of 10m/s travels a distance of 1,475m. The time it takes the bus can be calculated as follows:
10 = 1475/t
t = 147.5seconds
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describe the connections between the processes of photosynthesis and combustion. What is the connection between photosynthesis and combustion?
The link between photosynthesis as well as combustion would be that photosynthesis produces oxygen, which would be utilized in combustion.
Complete oxidation using simple hydrocarbon fuels produces carbon dioxide (C02) from every molecule of carbon as well as water (H20) from either the hydrogen, i.e., given a CnHm hydrocarbon fuel,
Despite the idealised scenario of complete combustion, accounting for all species involved in combustion exhaust entails more than just measuring CO2 as well as H20 levels. Because fuels were burned in air instead of just pure oxygen, nitrogen in the air could participate inside the combustion process and cause nitrogen oxide to be produced.
Furthermore, many fuels contain components besides the carbon, which may be changed during burning. Finally, because combustion cannot always be complete, effluent gases contain unburned together with partially burned materials in additional to CO2 as well as H20.
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PHYSICS PLS HELP ASAP
If the horizontal speed of ball is 27 m/s and time taken to reach the ground is 2.2 s then according to equation of motion height of tower will be 23.71 m
What is horizontal speed?The bullet appears to be traveling straight forward without changing directions, according to the horizontal speed. The moment the projectile is launched, no net forces are exerted in a horizontal direction. As a result of zero acceleration, the projectile's horizontally speed remains unchanged throughout the trajectory motion.
Given-
Horizontal speed = 27 m/s
Time to reach the ground = 2.2 s
For Y axis -
Initial velocity (u) = 0 m/s
By using the equation of motion for horizontal motion
v = u + g t
Where 'g' is acceleration due to gravity whose value is 9.8 m/s
v = 0 + (-9.8 × 2.2)
v = -21.56 m/s
Here negative sign represent downward motion.
Height of tower is measured by using the equation-
h = u * t + 1/2 × g * t²
h = 0 + 1/2 × (9.8) × (2.2)²
h = 1/2 × (9.8) × 4.84
h = 23.71 m
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No machine operates with 100% efficiency. How does this relate to the Law of Conservation of Energy?
No machine operates with 100% efficiency, and this relates to the Law of Conservation of Energy as the efficient machines require some of the energy input to operate, and some of the energy is converted into heat by friction too, so both options C and D are correct.
What is the significance of energy conservation?According to this rule, energy only changes form, and never 100% of the energy is utilized by anything, whether by living forms or machines, because some of the energy's form is lost in the process.
Hence, no machine operates with 100% efficiency, and this relates to the Law of Conservation of Energy as the efficient machines require some of the energy input to operate, and some of the energy is converted into heat by friction too, so both options C and D are correct.
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What will happen to the force between the two magnets if they are pulled apart?
Answer:
It decreases
Explanation:
The force decreases because its getting pulled apart
At what point is a pendulum acceleration at the greatest rate?
In a pendulum, the acceleration is at the greatest rate at the point of greatest displacement from the equilibrium or the point of highest amplitude.
A pendulum is a weight suspended from a fixed point that swings back and forth due to the force of gravity. The most common form of a pendulum is a weight, or bob, hanging from a cord or rod. When the pendulum is given an initial push, it will continue to swing back and forth due to the force of gravity acting on the bob. The motion of a pendulum is known as oscillation.
At the highest point of the swing, the velocity of the pendulum is zero and the acceleration is at its maximum as the pendulum changes direction. At this point, the acceleration is directed towards the center of oscillation and is directed towards the equilibrium position. As the pendulum swings back and forth, the acceleration decreases as the velocity of the pendulum increases and reaches zero again at the highest point of the swing.
It's also worth noting that, the acceleration of a pendulum is not constant, but it is changing as the pendulum swings, and it's greatest at the point of the highest amplitude and it is directed towards the center of oscillation.
Therefore, the acceleration is at the greatest rate at the point of highest amplitude.
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The number of hours a light bulb burns before failing varies from bulb to bulb. The distribution of burnout times is strongly skewed to the right. The central limit theorem says that:
A. The average burnout time of a large number of bulbs has a distribution that is close to Normal.
B. The average burnout time of a large number of bulbs has a distribution of the same shape (strongly skewed) as the distribution for individual bulbs.
C. As we look at more and more bulbs, their average burnout time gets ever closer to the mean for all bulbs of this type.
D. None of the above
The central limit theorem says that the average burnout time of a large number of bulbs has a distribution that is close to normal.
According to the central limit theorem, if you collect sufficiently sizable random samples from a population with replacement text annotation indicator and mean and standard deviation, the distribution of the sample means will be roughly normally distributed. If the sample size is sufficient (often n > 30), this will hold true whether the source population is normal or skewed. Theorem holds true for samples smaller than 30 if population distribution is normal. Given that min(np, n(1-p))> 5, where n is the sample size and p is the population's success probability, this is actually true even if the population is binomial.
This implies that when drawing conclusions about a population mean from the sample mean, we can measure uncertainty using the normal probability model.
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The magnitude of the electrostatic force between two point charges is F. If the distance between the charges is doubled, the electrostatic force between the charges will become
answer choices
a. F/4
b. F/2
c. 4F
d. 2F
The electrostatic force between the charges decreases by a quarter when the distance between them is doubled. The correct option to this question is A.
How to calculate charge?Between two point charges, there is electrostatic force.
Coulomb's law is used to compute the electrostatic force between two point charges: F= kq2 / r2
The letter F represents the force.
Coulomb's constant is k
q represents the fee.
The distance is given by r.
When the charge distance is doubled
F= kq2/(2r)2 F= kq2/(2r)2 F= kq2/(2r)2 F= 1/4kq2 / r2
Thus, doubling the distance between the charges reduces the electrostatic force between them by a quarter.
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PLEASE HELP ASAP
A projectile is shot horizontally off a cliff at a speed of 27 m/s. It hits the ground
2.2 seconds later.
How high is the cliff, in meters?
Answer:
Approximately [tex]11\; {\rm m}[/tex], assuming that gravitational acceleration is [tex]g = 9.81\; {\rm m\cdot s^{-2}}[/tex] and that air resistance is negligible.
Explanation:
The question is asking for the vertical displacement, [tex]x_{y}[/tex].
Under the assumptions, acceleration in the vertical direction would be [tex]a_{y} = -g = (-9.81)\; {\rm m\cdot s^{-2}}[/tex].
Since the projectile is launched horizontally, initial vertical velocity would be zero: [tex]u_{y} = 0\; {\rm m\cdot s^{-1}}[/tex].
It is given that the projectile is in this motion for [tex]t = 2.2\; {\rm s}[/tex]. Apply the SUVAT equation [tex]x = (1/2)\, a\, t^{2} + u\, t[/tex] and solve for the vertical displacement:
[tex]\begin{aligned}x_{y} &= \frac{1}{2}\, a_{y}\, t^{2} + u_{y}\, t \\ &= \frac{1}{2}\, ((-9.81)\; {\rm m\cdot s^{-2}})\, (2.2\; {\rm s})^{2} + (0\; {\rm m\cdot s^{-1}})\, (2.2\; {\rm s}) \\ &= \frac{(-9.81)\, (2.2)^{2}}{2}\; {\rm m} \\ &\approx (-11)\; {\rm m} \end{aligned}[/tex].
Note that the value of vertical displacement is negative since the projectile landed below where it was launched. The height of this cliff would be approximately [tex]11\; {\rm m}[/tex].
A driver ignores the stop sign and continues driving west at constant speed.
A driver ignores the stop sign and continues driving west at constant speed ,is true.
Which graph depicts an item moving faster?A speed-time graph demonstrates how a moving object's speed varies over time. The acceleration increases as the graph becomes more pronounced. A horizontal line denotes a constant speed of motion for the item. The item is slowing down if the line slopes downhill.An object's total change in position is referred to as displacement, a vector variable that measures "how far out of place an item is."The object's acceleration is shown by the slope of a velocity graph.A driver ignores the stop sign and continues driving west at constant speed ,is true.The complete question is A driver ignores the stop sign and continues driving west at constant speed.t/false
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what is the current produced by a 9-v battery flowing through a resistance of 200
Answer:
7-12-99
Explanation:
Voltage can be thought of as the pressure pushing charges along a conductor, while the electrical resistance of a conductor is a measure of how difficult it is to push the charges along. Using the flow analogy, electrical resistance is similar to friction. For water flowing through a pipe, a long narrow pipe provides more resistance to the flow than does a short fat pipe. The same applies for flowing currents: long thin wires provide more resistance than do short thick wires.
The resistance (R) of a material depends on its length, cross-sectional area, and the resistivity (the Greek letter rho), a number that depends on the material: The resistivity and conductivity are inversely related. Good conductors have low resistivity, while poor conductors (insulators) have resistivities that can be 20 orders of magnitude larger.
Resistance also depends on temperature, usually increasing as the temperature increases. For reasonably small changes in temperature, the change in resistivity, and therefore the change in resistance, is proportional to the temperature change. This is reflected in the equations:At low temperatures some materials, known as superconductors, have no resistance at all. Resistance in wires produces a loss of energy (usually in the form of heat), so materials with no resistance produce no energy loss when currents pass through them.
Ohm's Law
In many materials, the voltage and resistance are connected by Ohm's Law: Ohm's Law : V = IR. The connection between voltage and resistance can be more complicated in some materials.These materials are called non-ohmic. We'll focus mainly on ohmic materials for now, those obeying Ohm's Law.
Example
A copper wire has a length of 160 m and a diameter of 1.00 mm. If the wire is connected to a 1.5-volt battery, how much current flows through the wire?
The current can be found from Ohm's Law, V = IR.
The V is the battery voltage, so if R can be determined then the current can be calculated. The first step, then, is to find the resistance of the wire:L is the length, 1.60 m. The resistivity can be found from the table on page 535 in the textbook.
The area is the cross-sectional area of the wire. This can be calculated using:The resistance of the wire is then:
The current can now be found from:
Ohm's Law:I = V / R = 1.5 / 3.5 = 0.428 A
A car moving at a constant speed of 25 m•s-1, has a mass of 730 kg and collides with another stationary car of mass 1800 kg. If the two cars stick together, what is their final velocity immediately
after the collision? Give your answer in m•s without a unit and to an appropriate number of significant figures.
(Show Work)
Using conservation of linear momentum, the final velocity is 7.2 ms⁻¹.
The conservation of linear momentum states that the momentum of a system of bodies remains constant if the net external force acting on the system is zero. We must keep in mind that the system's momentum, not the momentum of the individual particles, is conserved. According to the principle of momentum conservation, momentum is only modified by the action of forces as they are outlined by Newton's equations of motion; momentum is never created nor destroyed inside a problem domain.
P = mv is the equation for linear momentum. Conservation of momentum refers to the fact that the overall amount of momentum remains constant.
As per conservation of linear momentum,
p0 = pf so that
(730)(25) + 1800(0) = (730 + 1800) vf.
18250 = 2530 vf
vf = 18250 / 2530
Final velocity = 7.2 ms⁻¹
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What does the reproductive system of a frog do? How is this similar to the human reproductive system?
The reproductive system of a frog is responsible for the production, The reproductive system of a frog is similar to the human reproductive system in that both are responsible for producing and releasing eggs and sperm.
The reproductive system of a frog is responsible for the production, maturation, and release of eggs and sperm, which are used for sexual reproduction. The female frog has two ovaries which produce eggs, while the male frog has two testes which produce sperm. The eggs are fertilized by the sperm outside of the body, usually in water.
The reproductive system of a frog is similar to the human reproductive system in that both are responsible for producing and releasing eggs and sperm. However, there are also some key differences. For example, in frogs, fertilization occurs outside of the body, while in humans, it occurs inside the female's body. Additionally, frogs have external fertilization, whereas humans have internal fertilization.
Another difference is that in frogs, the eggs are laid and fertilized in water, while in humans the eggs are fertilized inside the female's body and the offspring develops inside the uterus.
Overall, although the reproductive system of a frog and a human have some similarities, they are also quite different in terms of their anatomy and the way reproduction occurs.
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additionally, some scientists speculate that our universe is not the only universe that exists, but the only one we can gather evidence about. this idea is called
Moreover, some scientists speculate that our universe is not the only universe that exists, but the only one from which evidence can be collected. This idea is called the big bang theory.
At the big bang, astronomers explain the beginning of the universe. The idea is the universe started as a single point, expanded to its current size, was stretched, and is still expanding. According to the Big Bang theory, the observable expansion of the universe began with the explosion of a single particle at a specific point in time. Georges Lemaître (1894–1966), was a Belgian cosmologist, Catholic priest, and father of the Big Bang theory.
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For a scientific hypothesis to be valid, there must be a test for proving it
a. right
b. wrong
c. conclusively one way or the other
Option (a) is a good choice. A scientific theory must pass a test to prove its veracity. A scientific hypothesis in science is a theory that provides a tentative explanation for a phenomenon.
A specific set of natural world phenomena. The two essential elements of a scientific hypothesis are falsifiability and testability. They are represented by a "If...then" statement that summarises the idea and by the ability to be verified or refuted through experimentation and observation. A hypothesis in science is a theory that provides a tentative explanation for one or a small number of observable events in the natural world. The two primary attributes of a scientific theory are falsifiability and testability.
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An charge with mass m and charge q is emitted from the origin, (x,y)=(0,0). A large, flat screen is located at x=L. There is a target on the screen at y position yh, where yh > 0. In this problem, you will examine two different ways that the charge might hit the target. Ignore gravity in this problem. Now assume that the charge is emitted with velocity v0 in the positive y direction. Between the origin and the screen, the charge travels through a constant electric field pointing in the positive x direction. What should the magnitude E of the electric field be if the charge is to hit the target on the screen?
ATP and NADPH serve as the chemical fuel for the light independent processes, often referred to as the Calvin cycle.
Adenosine triphosphate, also known as ATP, is a highly energetic molecule that both stores and releases energy. It is created by the process of photophosphorylation during the light-dependent activities of photosynthesis. Another high-energy molecule formed during the light-dependent processes is NADPH, or nicotinamide adenine dinucleotide phosphate. This happens as a result of non-cyclic electron transport.
The light independent processes that transform carbon dioxide into glucose and other sugars are powered by both ATP and NADPH. An enzyme known as Rubisco uses the energy from these molecules to drive the fixation of carbon dioxide, turning it into a carbohydrate.
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how much work is done by a person who exerts a 5 newton force that moves a 12 kg box 8 meters in 7 seconds? what was the power of the person?
The work done by the person will be 40 joules and the power of the person will be 5.71 watts.
In order to calculate the amount of work done by a person who exerts a 5 newton force that moves a 12 kg box 8 meters in 7 seconds, we must calculate the power of the person.
To calculate the work done, the following equation can be used: work (in joules) = force (in newtons) x distance (in meters). In this case, the work done is 5 x 8 = 40 joules.
To calculate the power, the following equation can be used: power (in watts) = work (in joules) / time (in seconds). In this case, the power is 40 / 7 = 5.71 watts.
Therefore, the person who exerted a 5 newton force that moved a 12 kg box 8 meters in 7 seconds had a power of 5.71 watts.
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find the average velocity over the time interval from 1 to 3 seconds. express your answer in meters per second to the nearest integer.
According to the graph, the average speed of the time interval from 1 to 3 seconds is 20 m/s.
In physics, the interval is a term used to describe distances in space and time. Time interval is the amount of time between two specific points in time. An example would be: "The time interval between three o'clock and four o'clock is one hour."
In the graph, the time interval from 1 to 3 seconds is 2 seconds.
In this case, the change in position is about = 40 m
then the average speed is:
v = change in position/time
v = 40/2
v = 20m/s
So, the average speed is 20 m/s.
This question is accompanied by a graphic.
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two forces f1 and f2 with |f1|=30N and|f2|=40N act on a point , if the angle between f1&f2 is 30°, then what is the resultant force
Answer:
Explanation:
The resultant force can be found by using the law of cosines. The magnitude of the resultant force (|R|) is given by the square root of (f1^2 + f2^2 - 2f1f2*cos(theta)), where theta is the angle between the two forces.
In this case, |R| = sqrt(30^2 + 40^2 - 23040cos(30)) = sqrt(900 + 1600 - 1200(sqrt(3)/2)) = sqrt(2500 - 1200*(sqrt(3)/2)) = sqrt(2500 - 600sqrt(3)) = 50sqrt(3) N
calculate the number of minutes you would need to cycle to work for 200 g chips
You would need to cycle 1 hour 50 minute to work for 200 g chips.
What are calories?Energy is measured in calories. Calories in nutrition relate to the energy that humans obtain from the food and liquids they consume as well as the energy they expend when engaging in physical activity.
On every food package, the nutritional information includes a list of calories.
200 grams of potato chips have 1074 calories.
Calorie burn on 30 minute Cycling is 298 calories.
So, to burn 1074 calories, you have to cycle = (1074 ÷ 293) × 30 minute
= 110 minute
= 1 hour 50 minute.
Hence, you would need to cycle 1 hour 50 minute to work for 200 g chips.
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A video-disc player that is not playing still uses 6. 0w of power. What is the current into the video-disc player if it is plugged into a standard 130v outlet
A video-disc player that is not playing still uses 6.0 W of power and is plugged into a standard 130 V outlet. So the electric current it has is 0.04 Amps
According to international units, the formula for calculating electric power is P = V x I, where P is electric power (W), V is electric voltage (V), and I is electric current (A). So, to calculate the current on the video disc player is:
I = P/V
In terms of the electric power is 6.0 W and the electric voltage is 130 V, then the electric current is:
I = P/V
I = 6.0W/130V
I = 0.04 Amps
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At what time will the interfering waves have an amplitude of zero? 1.0 3.0 4.0 7.0
At 4.0 time will the interfering waves have an amplitude of zero.
How can you determine an interference wave's amplitude?Step 1: Confirm that there is beneficial interference in the waves. Step 2: Calculate A1+A2 A 1 + A 2 to get the amplitude of the resultant wave, where A1 is the amplitude of the first wave and A2 is the amplitude of the second wave.When the crests of two waves cross over, it is called constructive interference. This results in an increase in wave amplitude. When the crests of one wave cross the troughs of another wave, destructive interference takes place and the amplitude of both waves is reduced. At 4.0 time will the interfering waves have an amplitude of zero.To learn more about interfering waves refer to:
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