397 cents is the cost of running a 3.1 kilowatt (kW) air conditioner for 8
hours.
How do we calculate cost?To calculate your overall cost, add your fixed and variable costs. The technique for determining a business's total costs is rather straightforward, much like with personal budgets: Total Cost = Fixed Costs + Variable Costs.You add your fixed and variable costs and divide the total by the quantity of units you generate to arrive at your cost per unit. Cost per Unit = (Total Fixed Costs + Total Variable Costs) / Total Units Produced is the formula for calculating cost per unit.Fixed costs, variable costs, direct costs, and indirect costs are the four basic categories into which costs are divided.Making judgements on price, manufacturing volume, and sales while also determining the expenses of the goods and services the group sells.Given data :
cost per kilowatt hour = 16 cents
Total hours = 8 hours
Total power consumed = 3.1 KW
Cost for 3.1 KW = 16 x 3.1 = 49.6
Total cost for power consumed for 8 hour = 49.6 x 8
= 396.8 to 397 cents
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The arm of a crane at a construction site is 20.0 m long, and it makes an angle of 12.2° with the horizontal. Assume that the maximum load the crane can handle is limited by the amount of torque the load produces around the base of the arm.
(Pt. 1/2) What maximum torque can the crane withstand if the maximum load the crane can handle is 752 N?
Answer in units of N · m.
(Pt. 2/2) What is the maximum load for this crane at
an angle of 30.0° with the horizontal?
Answer in units of N.
The maximum torque the crane can withstand is 3.17 x 10³N·m..
The maximum load for the crane is 3.265 x 10⁴ N.
How to find maximum torque and load?To find the maximum torque the crane can withstand, we need to use the formula torque = force x distance x sin(angle). Given the force (752 N) and the angle (12.2°), and the distance can be calculated as the length of the arm (20.0 m). So, torque = 752 N x 20.0 m x sin(12.2°) = -5.388 x 10³N·m.
To find the maximum load the crane can handle at an angle of 30.0°, we need to use the same formula, but with the new angle. Using the torque found in part 1 and the angle to find the force. Max load= force x distance x sin(angle), so force = torque / (distance x sin(angle)) = 752 x -5.388 x 10³ x sin(30.0) = 3.265 x 10⁴ N.
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collision question
what formula do i use??
The mass of train B cannot be determined from the given information. The final velocity of the combined trains after the collision depends on the masses of both trains, as well as their initial velocities. The final velocity of the combined trains must be known in order to calculate the mass of train B.
How is the mass of the train calculated?The mass of Train B can be calculated using the law of conservation of momentum. According to this law, momentum is conserved before and after a collision. This means that the total momentum of the two objects before the collision is equal to the total momentum after the collision.
The momentum of train A before the collision is given by:
P_A = m_A * v_A = (5000 kg) * (10 m/s) = 50000 kg m/s
The momentum of train B before the collision is:
P_B = m_B * v_B = m_B * (2.0 m/s)
After the collision, the two trains lock together and move with a common velocity. The momentum of the combined system is:
P_total = (m_A + m_B) * v_total
where v_total is the velocity of the combined system after the collision.
From the law of conservation of momentum, we have:
P_A + P_B = (m_A + m_B) * v_total
Substituting the values of P_A, P_B and m_A, we get:
m_B * (2.0 m/s) = (5000 kg + m_B) * v_total
Solving for m_B, we get:
m_B = (50000 kg m/s) / (2.0 m/s - v_total)
Since the velocity of the combined system is not known, we cannot calculate the exact value of m_B. However, we can conclude that the mass of Train B must be larger than 5000 kg for the equation to be valid.
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PLEASE HELP ASAP! 100 PTS! 5 QUESTIONS - Pls Show Your Work!!!!
1. Two carts are pushed apart with a spring attached to one of the carts. The carts have masses of 1.2 kg and 2.5 kg. The 2.5 kg cart (Cart B) has a velocity of 1.5 m/s after they spring apart. Find the velocity of the 1.2 kg. cart.
2. An 6,000 kg train car moves at 20.0 m/s until it bumps into a stationary 6,000 kg car and latches onto it. What is the speed of the two cars linked together?
3. A single 1,000 kg train car moving at 5.0 m/s collides with the back of two 1,000 kg train cars linked together. It latches onto the car it strikes as the two parts of the coupled cars exert forces on each other. What is the speed of the cars immediately afterward?
4. A 15.0 kg cart and a 20 kg cart are locked together with a compressed spring between them. They are then released so that the spring pushes the two carts apart. The 20 kg cart is moving at 5.0 m/s afterward. How fast is the 15.0 kg cart moving?
5. A firecracker stuck into a 150 g apple explodes and sends five apple fragments in different directions. The vector sum of momenta 1, 2, 3, and 4 is found from a video of the event to have components px = 1.20 kg m/s, py = 0.80 kg m/s (with no other component). The mass of the fifth fragment is 0.050 kg. What is its velocity right after the explosion?
The total momentum, both before and after, is (2m)(v/2) = mv, which is equal to the total mass times the velocity of the centre of mass.
How do you find the momentum of two objects after a collision?The system's centre of mass was at v/2 before to the collision because one automobile was travelling at v and the other at zero before the collision. Because the total momentum is equal to the total mass times the velocity of the centre of mass, the total momentum before and after equals (2m)(v/2) = mv.
K.E1 = 1/2 m1u21 + 1/2 m2u22 is the kinetic energy of the masses prior to contact. The collision's kinetic energy, however, is given by K.E2 = 1/2 (m1 + m2) v2. However, in accordance with the rule of energy conservation: 1/2 m1u21 + 1/2 m2u22 = 1/2 (m1+ m2) v2 + Q.
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14. Using the dimensions given for the variables in the table, determine which one of the following expressions is correct. (d) 2лf=√1/g (b) f= 2лgl (a) f=g/2лl (c) 2лf =√g/l ro 1 (e) f = 2л√gl variable f l g dimension [1/T] [L] [L]/[T]²
From the expressions given in the question the correct expression is f = 2л√gl
Algebraic equationAn algebraic equation is an equation that involves one or more variables and uses one or more of the operations of addition, subtraction, multiplication, division, and raising to a power.
In this question,
f = 2л√gl To find an expression for f
we need to use the dimensions of the variables given in the table.
f has a dimension of 1/T,
l has a dimension of L,
and g has a dimension of L/T².
We can use these dimensions to determine the expression for f.
f = 2л√gl To convert the dimensions of f to 1/T,
we multiply the expression by 2л. Thus, the correct expression is:
f = 2л√gl
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A straight rod of length =22.80 cm carries a uniform charge density =1.80×10^−6 C/m. The rod is located along the ‑axis from 1=0.00 to 2=. The Coulomb force constant is =8.99×10^9 N·m2/C2.
A vertical line of positive charge of length capital L. A labeled point P is located above the line of charge along a line coaxial with the line of charge. The distance from the base of the line of charge to point P is y subscript zero, with y sub zero greater than L.
Find the expression for the electric field along the y‑axis Ey at a point P. What is the magnitude of the electric field at y0=60.00 cm?
Help is greatly appreciated!!
Compound A decomposes to form B and C and the reaction is first order. At 25 °C the rate
constant for the reaction is 0.450 s-1. What is the half life of A at 25 °C?
The half - life of the compound A is 1.54 sec.
A sample's half-life is the amount of time it takes for half of its unstable nuclei to decay, for its activity to halve, or for its count rate to decrease by half. The number of decays that a detector, like the Geiger-Muller tube, records each second is known as the count-rate.
The amount of time needed for the reactant concentration to drop to half its initial value is known as the half-life of a reaction. A first-order reaction's half-life is a constant that is correlated with its rate constant: t1/2 = 0.693/k.
Given,
rate constant for the reaction is 0.450 s-1.
t 1/2 = 0.693 / k
k = The rate constant
t 1/2 = 0.693 / 0.450s-1
t 1/2 = 1.54 sec.
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A boat is traveling in a river that has a current of 6 km/h [W]. If the boat's velocity is 9.5 km/h [E],
what would be the velocity of the boat from the perspective of a stationary observer on the
riverbank.?
The velocity of the boat from the perspective of a stationary observer on the riverbank is 3.5 km/h east.
What is the relative velocity of the boat?The relative velocity of the boat from the perspective of a stationary observer on the riverbank is calculated as follows;
Vb/o = Vb + Vw
So the velocity of the boat from the perspective of a stationary observer is the sum of the boat's velocity and the river's velocity.
Let the east direction = positive direction
Let the west direction = negative direction
Vb/o = 9.5 km/h - 6 km/h
Vb/o = 3.5 km/h
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A length of clear plastic tubing is bent into a vertical U, as shown in the figure, and two liquids that do not mix are poured into it. Liquid A, with density ρA continues from the left column into the right. Its height is d1 in the left column and d2 in the right column. Liquid B, with density ρB, sits on top of liquid A in the right column. Its height is d3 above liquid A.
Enter an expression for the density of liquid B, in terms of the other defined quantities.
An expression for the density of liquid B, is ρ₁(d₁ - d₂)/d₃.
What is pressure?The force delivered perpendicularly to an object's surface per unit area across which that force is dispersed is known as pressure.
The pascal (Pa) is the pressure unit used in SI. A force of one newton applied across a surface area of one meter square is referred to as a pascal.
At equilibrium, the pressure of two tube is same. Use this concept and get:
The density of liquid B: ρ₂ = ρ₁(d₁ - d₂)/d₃
Hence, an expression for the density of liquid B, is ρ₁(d₁ - d₂)/d₃.
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A radioactive isotopes has a life-life of 15 days and an initial
count-rate is 2000 counts per second. Determine the count-rate after
45 days.
Counts/s
The activity is a radioactive material is the number of counts per second it produces. 1 count per second (cps) = 1 Becquerel (Bq).
What is radioactive?As its name implies, radioactivity is the act of emitting radiation spontaneously. This is done by an atomic nucleus that, for some reason, is unstable; it "wants" to give up some energy in order to shift to a more stable configuration. During the first half of the twentieth century, much of modern physics was devoted to exploring why this happens, with the result that nuclear decay was fairly well understood by 1960. Too many neutrons in a nucleus lead it to emit a negative beta particle, which changes one of the neutrons into a proton. Too many protons in a nucleus lead it to emit a positron (positively charged electron), changing a proton into a neutron. Too much energy leads a nucleus to emit a gamma ray, which discards great energy without changing any of the particles in the nucleus. Too much mass leads a nucleus to emit an alpha particle, discarding four heavy particles (two protons and two neutrons).To learn more about neutrons refer to:
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Plasma is a state of matter used in neon signs and plasma TVs. According to the model, what question should be asked in the formation of plasma?
Plasma is a state of matter used in neon signs and plasma TVs.
What question should be asked in the formation of plasma?To form plasma, following questions need to be answered:
What is the temperature of the material? Plasma is formed when a material is heated to extremely high temperatures, typically tens of thousands of degrees.
What is the pressure of the material? Plasma can also be formed under high pressure conditions, typically in the range of atmospheres to tens of atmospheres.
What is the composition of the material? The type of atoms or molecules present in the material can affect its behavior and the conditions required to form plasma.
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A coin is placed 32 cm from the center of a
horizontal turntable, initially at rest. The
turntable then begins to rotate. When the
speed of the coin is 110 cm/s (rotating at a
constant rate), the coin just begins to slip.
The acceleration of gravity is 980 cm/s^2.
What is the coefficient of static friction between the coin and the turntable?
The coefficient of static friction between the coin and the turntable μs = (110 cm/s^2) / (980 cm/s^2) = 0.112
What is static friction?
Static friction is a force which acts between two surfaces that are in contact with each other and are not moving. It is the force that opposes the initial motion of an object at rest.
Static friction is dependent on the roughness of the surfaces, and the normal force between them. It is usually greater than kinetic friction, and is the force that needs to be overcome to move an object from rest.
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For each of the 3 Laws of Motion, present an introductory statement that defines and describes the Law. Then, present the URLs for 5 pictures that demonstrate each Law as it occurs in the real world.
Format your answer like this:
Newton's First Law of Motion:
Write a description, then list 5 URLs from the Internet that demonstrates Newton's First Law of Motion.
To solve this we must be knowing each and every concept related to Laws of Motion. Therefore, in below given ways Newton's First Law of Motion can be defined.
What is Laws of Motion?The Newtonian laws is three fundamental classical mechanics rules that define the connection between an object's motion and the forces that act on it.
Newton's first law asserts that when a body is stationary or travelling at a consistent speed line, this will remain stationary or continue to move in a straight path at such a constant speed until acted on by a force. Newton's second law is indeed a quantitative explanation of the effects which a force can have on a body's motion.
Therefore, in above given ways Newton's First Law of Motion can be defined.
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Two types of transport ___________________________ or ____________________________
Which one does not require energy?_________________________________
In the one that does not require energy, the move across a _______________________________________________________.
They move from _____________ concentration to _____________________ concentration.
The goal is to have the molecules _______________________ over time on both sides of the concentration gradient.
Two types of transport are active and passive transport, in passive transport, there is no requirement for energy.
What are active and passive transport?In the one that does not require energy, they move across a cell membrane, They move from higher concentration to lower concentration. The goal is to have the molecules equal overtime on both sides of the concentration gradient.
In active transport, there is the expenditure of energy because in this transport molecules flow from a lower concentration gradient to a higher concentration gradient.
Therefore, there are two types of transport active and passive transport.
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WHAT IS HAPPENING?
SHEET 3
Match each of the following seven scenarios with the most appropriate graph given. As you
look at each graph from left to right, remember that time is advancing.
1. We rode the roller coaster steadily to the top, then went faster and faster as we
went down the other side. The speed of the roller coaster is the dependent vari-
able of the graph, that is, the variable on the vertical axis.
2. The kettle heats before the corn begins to pop. The corn starts to pop and contin-
ues popping until almost all the corn had popped. The amount of unpopped corn
in the kettle is the dependent variable.
3. A balloon was blown up in class and then let go. It flew around the room. The
amount of air in the balloon is the dependent variable.
4. At the beginning of spring, the grass grew slowly and I seldom had to mow the
lawn. By midsummer it was really growing, so I mowed twice a week. In fall, I
only mow once in a while. The number of lawn mowings to date is the dependent
variable.
5. I turned the oven on. When it was hot, I put in the cake. The cake baked for about
thirty minutes. I turned the oven off and removed the cake. The oven temperature
is the dependent variable.
6. We bought a pair of rabbits last year. They have had several litters, and we have so
many rabbits that the pens are full. If more are born, we will have to give some away
or find room for the new ones. The number of rabbits is the dependent variable.
7. I put water in the ice-cube tray and placed it in the freezer. The temperature of
the water in the ice-cube tray is the dependent variable.
From the Mathematics Teacher, April 1999
Following are the appropriate scenarios with the most appropriate graph given.
1. We rode the roller coaster steadily to the top, then went faster and faster as we went down the other side. The speed of the roller coaster is the dependent variable of the graph, that is, the variable on the vertical axis. - A
2. The kettle heats before the corn begins to pop. The corn starts to pop and continues popping until almost all the corn had popped. The amount of unpopped corn in the kettle is the dependent variable. - G
3. A balloon was blown up in class and then let go. It flew around the room. The amount of air in the balloon is the dependent variable. - C
4. At the beginning of spring, the grass grew slowly and I seldom had to mow the lawn. By midsummer it was really growing, so I mowed twice a week. In fall, I only mow once in a while. The number of lawn mowings to date is the dependent variable. - F
5. I turned the oven on. When it was hot, I put in the cake. The cake baked for about thirty minutes. I turned the oven off and removed the cake. The oven temperature is the dependent variable. - E
6. We bought a pair of rabbits last year. They have had several litters, and we have so many rabbits that the pens are full. If more are born, we will have to give some away or find room for the new ones. The number of rabbits is the dependent variable. - B
7. I put water in the ice-cube tray and placed it in the freezer. The temperature of the water in the ice-cube tray is the dependent variable. - D
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Complete question -
2
Global annual land mean precipitation showed a small
upward trend over the twentieth century of approximately
1.1 mm per decade. At this rate, an overall increase of 1
cm in precipitation, starting from today, would take how
long?
Even in regions where overall precipitation is anticipated to decline, heavy precipitation events will probably become more common.
What is the annual pattern of global precipitation?The average annual precipitation on Earth is roughly 100 cm (39 inches), yet it is spread quite unevenly. The equatorial zone and Southeast Asia's monsoon region have the highest rainfall rates.
It is predicted that the north will become more rainy, particularly in the winter and spring. The South, particularly the Southwest, is anticipated to get drier. Even in regions where overall precipitation is anticipated to decline, heavy precipitation events will probably become more common.
The amount of evaporation increases with rising surface temperatures (see the U.S. and Global Temperature indicator), which in turn raises the total amount of precipitation. As a result, many places might expect more precipitation as a result of global warming.
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5. A Car of mass 1000kg is driven from it's initial
state with uniform acceleration and reaches a
Speed of 30km/h in 10 second find
1 ). Force exerted by the engine.
2). the power in killo watts (kw)
24. A student is driving his car for the first time . His car's mass is 1000 Kg and he is traveling at 25m / s Another student pulls out in front of him in his 1500 Kg car going 10m / s The two vehicles collide and stick together (their bumpers get stuck together). How fast are they moving after the collision?
After the collision, the two vehicles will be moving at a combined speed of 15m/s,fast are they moving after the collision.
What is the collision ?
Collision, in physics, is the action of two or more objects coming into contact with each other. The result of this contact can be anything from a minor stop-and-go jolt to a catastrophic impact that destroys both objects involved. Collisions can occur between two-dimensional objects, such as billiard balls, or between three-dimensional objects, such as cars. A collision can be elastic, in which the objects rebound from each other, or inelastic, in which the objects stick together. The collision can also be perfectly inelastic, in which the objects stick together and move as a single object after the collision. In all cases, the momentum of the objects before the collision is equal to the momentum of the objects after the collision.
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The driver of a pickup truck going 100 m/s applies the brakes, giving the truck a uniform acceleration of 6.5m/s² while it travels 20.0m.
a. What is the speed of the truck in kilometers per hour at the end of this distance?
b. How much time has elapsed?
The final velocity is 99 m/s
The time taken is 0.15 s
What is the final speed?
In this case we know that we would have to apply the equations of motion and when we do apply the equations of motion in this case we are going to have that;
v^2 = u^2 - 2as
v = final velocity
u = initial velocity
a = acceleration
s = distance
Thus we have that;
v = √ u^2 - 2as
v = √ (100)^2 - 2 * 6.5 * 20
v = 99 m/s
The time that has elapsed is;
v = u - at
t = v - u/a
t = 99 - 100/-6.5
= 0.15 s
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Answer:
The final velocity is 99 m/sThe time taken is 0.15 s
Explanation:
Given the following data, determine how long it will take your space ship
to travel from Earth to Mars in years.
Distance from Earth to Sun: 150,000,000 km
Distance from Mars to Sun: 230,000,000 km
Maximum Speed of ship: 3,050 km/hr
365 days/year
24 hours/day
It will take our ship 3 year to travel from Earth to Mars if the speed is 3,050 km/hr.
What is speed?The distance travelled per unit of time is most commonly known as speed. It describes how quickly an object moves. The magnitude of the velocity vector is represented by speed, which is a scalar quantity. It's aimless. A faster moving object has a higher speed. It is moving slower if it has a lower speed. It has no speed if it is not moving at all.
The following formula is used to calculate the constant velocity of an object moving in a straight line:
S = d / t
Distance from Earth to Mars = Distance from Mars to Sun - Distance from Earth to Sun
Distance from Earth to Mars = 230,000,000 km - 150,000,000 km
= 2.3 × 10⁸ - 1.5 × 10⁸
= (2.3-1.5) × 10⁸
= 0.8 × 10⁸
= 8 × 10⁷ km
Time = Distance ÷ Speed
Given speed = 3,050 km/hr
Distance = 8 × 10⁷ km
Putting the values,
Time = 80,000,000 ÷ 3,050
Time = 26229.51
24 hours a day, so
26229.51/24
= 1092.9
365 days a year, so
1092.9/365
= 2.99 ≈ 3 years
Thus, It will take our ship 3 year to travel from Earth to Mars if the speed is 3,050 km/hr.
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a unit of time yr is defined as 365.25 days . how many seconds are there in 1.40yr
There are 44180640 seconds in 1.40 year .
What is a year?365 or 366 days, divided into 12 months or 52 weeks, make up the time from 1 January to 31 December, or a year.
1 year equals to 365.25 days
1.40 years equal to (1.40 × 365.25 days)
= 511.35 days.
1 day equals to 24 hours.
1 hour equals to 60 minute.
1 day equals to (24 × 60 × 60) second = 86400 seconds.
511.35 days equals to (511.35 × 86400 seconds) = 44180640 seconds
So, 1.40 years equal to 44180640 seconds.
Hence, There are 44180640 seconds in 1.40yr .
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An object with a mass of 33.2 kg moves with a constant velocity of 7.66 m/s for a time of 3.17 seconds. What is the momentum of the object?
The momentum of the object is 254.31 kg-m/s.
What is momentum?The product of a particle's mass and velocity is its momentum. Momentum is a vector quantity, meaning it has both magnitude and direction.
According to Isaac Newton's second equation of motion, the force acting on a particle equals the time rate of change of momentum. SI unit of momentum is kg-m/s.
Mass of the object is = 33.2 kg
Constant velocity of the object is = 7.66 m/s.
time interval is = 3.17 seconds.
Hence, the momentum of the object is = mass × velocity
= 33.2 kg × 7.66 m/s.
= 254.31 kg-m/s.
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Which of the following is true about electricity and magnetism?
1. The creation of an electric current or magnetic field depends on the movement of electrons.
2. Magnets can induce electric currents only when using the north pole of the magnet.
3. The free flow of protons down a copper wire causes an electric current that can create a magnetic field.
4. Attractive and repulsive forces between charged particles prevent them from creating electric currents or magnetic feilds.
The creation of an electric current or magnetic field depends on the movement of electrons.
What is Electricity?Electricity powers a variety of modern devices, including our soldering irons, laptops, lights, and air conditioners. In the contemporary world, it's difficult to avoid it.
Electricity is still at work in nature even when you make an effort to avoid it, from the synapses inside of our bodies to the lightning in thunderstorms.
There is truly no concrete solution to this incredibly complex subject; instead, all that is left are abstract illustrations of how electricity interacts with the world around us.
Therefore, The creation of an electric current or magnetic field depends on the movement of electrons.
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How much force required to displace a body through 50cm by doing 25J work on it.
Answer:
50 N
Explanation:
W = Fd
F = W/d
first convert cm → m: 50 cm x 1 m/cm = 0.50 m
F = (25 J) / (0.50 m) = 50 N
What is the kinetic energy of a ball when it stops moving?
O
1
2
3
why did i get that wrong
Answer:
it be the mean i think add them up through 0 -3 and divide by 3
Explanation:
Calculate the orbital velocity of Jupiter's Moon Io. (^M JUPITER = 1.9 E^27 kg, MIO = 8.9 E^22 kg, r = 4.2 E^8 m)
The orbital velocity of the Jupiter's Moon is 118.89 m/s.
What is the orbital velocity of the Jupiter?The orbital velocity of the Jupiter's Moon is calculated by applying the following orbital velocity formula.
v = √ ( GM / r )
where;
G is the universal gravitation constantM is the mass of the Jupiter's Moon r is the distance of the MoonThe orbital velocity of the Jupiter's Moon is calculated as follows;
v = √ ( GM / r )
v = √ ( 6.67 x 10⁻¹¹ x 8.9 x 10²² / 4.2 x 10⁸ )
v = 118.89 m/s
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Room has a sensible heat gain of 4000 btu per hr is to be maintained at 78F when the outside temp is 93F. The temp of the air entering the room is to be 68F. Determine the number of pounds of fresh air per minute that must be used if 75% of the total air is recirculated.
BTU = Flow Rate In GPM (of water) x (Temperature Leaving Process - Temperature Entering Process) x 500.4*Formula changes with fluids others than straight water.
What is sensible heat?Sensible heat is the type of heat that causes a change in temperature when you heat or cool an object. For instance, when you heat an ice cube, its temperature will start to rise until it reaches 0 °C, at which time it will begin to melt.
Similar to this, when we heat water from room temperature, it gets hotter and hotter until it begins to boil. Sensible heat is the heat that causes a change in temperature. In other words, the sensation you have is heat.
Latent heat, in contrast, is a type of heat that solely affects phase transitions. Use our latent heat calculator to learn more. The equation for sensible heat is:
=Q=mc p (T f −Ti )
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which measurement has five significant figures.
Answer:
Option D
Explanation:
11,890
Hope this helps
What is the scientific definition of energy that relates it to work? The ability to use the stored potential of an objects the ability to use an applied force to make and object move. The ability to use the change in temperature of an object theabiltyvis a joule which is a unit of work. Equal to ?
''The ability to use an applied force in order to make an object move'' is the scientific definition of energy that relates it to work.
What is energy in physics?The capacity to exert a force that causes an item to move is what is meant by the definition of energy as the "power to accomplish work." Even if the definition is unclear, the meaning is clear: energy is simply the force that moves things. Potential energy and kinetic energy are the two categories of energy.In physics, energy is the quantitative quality that is transmitted to a body or to a physical system. It is recognised in the execution of work as well as in the form of heat and light (from the Ancient Greek: v, enérgeia, "activity"). Energy is a preserved resource; according to the Law of conservation of energy, energy can only be transformed from one form to another and cannot be generated or destroyed.Learn more about energy refer to ;
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If a 6kg object is moving in a horizontal circle with a radius of 5m at the speed of 4 m/s and is undergoing uniform circular motion what is the centripetal force that is causing that uniform circular motion?
A. 28.8N
B.19.2
The centripetal force that is causing that uniform circular motion is 19.2 N. Hence, option (B) is correct.
What is centripetal force?A force that causes a body to follow a curved path is known as a centripetal force. It always moves in a direction that is the opposite of the body's velocity and in the direction of the immediate center of curvature of the path.
Mass of the object = 6 kg
Speed of the object = 4 m/s.
Radius of the circle = 5 meter
Hence, the centripetal force that is causing that uniform circular motion is = mv²/r
= (6 × 4²)/5 Newton
= 19.2 Newton.
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