Work And Energy True or False 1. True or False Only the net force acting on an object can do work. True or False If a particle remains at rest, then we can conclude that there is no work done on it. 3. True or False A force that is perpendicular to the velocity of the object is not doing work to the object. 4. True or False The force that causes the acceleration of an object following a circular path at a constant speed does work on the object.

Q: Calculate the work done (in J) by an 80.0 kg man who pushes a crate 3.95 m up along a ramp that…

A: Given that - Mass of the man Angle Distance Force To Find - We have to determine the work done by…

Q: Consider a situation where a constant force of 25 N acts on an object having a mass of 2 kg for 3…

A: Given Data: Constant Force F=25 N Mass of object M=2 kg Duration of force t=3 sec

Q: Energy Wer and 100 apply a constant force F = (-680 N) + (601) 380 kg car as the car travels 48.0 m…

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Q: A block is dragged over a horizontal surface by an 80 N force acting 25° above the horizontal. The…

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Q: (a) The roof of a large arena, with a weight of 250 kN, is lifted by 11 cm so that it can be…

A: Weight of the roof (F) = 250 kN.Lifted distance (d) = 11 cm. = 0.11 m.

Q: The force exerted on any object is F = F(E- 1) a) Find the work done in displacing the object from x…

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Q: A machine gun fires 360 bullets per minute. Each bullet has a mass of 5 grams and travels at 600…

A: Given: A machine gun fires 360 bullets per minute. mass each bullet of 5 grams  v = 600 m/s   To…

Q: .An electric motor has a power output of 1.5 kw. If it operates at 75% efficiency, what work can it…

A: N = 1.5 kW efficiency , = 75% To find = a) Work done in one hour in Joules                 b) Work…

Q: (a) What is the kinetic energy in joules of a 1010-kg automobile traveling at 77 km/h?  J (b) How…

A: Given: The mass of the automobile is 1010 kg. The speed is 77 km/h.

Q: 1B. A crate of mass 10.0 kg is pulled up a rough 20o- incline. The pulling force is 100 N parallel…

A: mass of crate (m) = 10 kg θ = 20oPulling force = 100 N coefficient of kinetic friction = 0.4distance…

Q: Provide an example of a situation that would help explain the concept of "zero work", in regards to…

A: In physics the work may be defined as the dot product of force and displacement. By dot product of…

Q: The work done against gravity in taking 5000 grams mass at 39.37 inches height in 1 sec will be

A: Work done is required to pull up a mass of m kg in height 'h' is= mgh Here, g=gravitational constant…

Q: 4. How work done is related to gravitational potential and kinetic energies? Also discuss the total…

A: 4. How work done is related to gravitational potential and kinetic energies? Let us consider we are…

Q: Calculate P3 (in W).   W (   b)Find the total power (in W) supplied by the source.   W

A: Given R1=1.60Ω R2=4Ω R3=13.8Ω Voltage of source V=12 V

Q: A kid on a bike coasts (No Pedaling) from the bottom to the top of a 25 m hill. What is the energy…

A: Given: The kid goes from bottom to top. The height of the hill is 25 m.

Q: A. Which case has the greates amount of work done of P over distance d B. Which case has the least…

A: A.  Correct option is E.  Work done is given by F. d. Dot product of force and displacement. Both…

Q: 11. Airflow lifts a 3.6 kg bird 50 m up. How much work was done by the flow?

A: We know that, Law of conservation of energy states that energy can neither be created nor…

Q: A 54-kg pole vaulter running at 10 m/s vaults over the bar. Her speed when she is above the bar is…

A: Given:- mplayer= 50 kg vi= 10 m/s vf= 1.0 m/s yi= 0 m

Q: A car weighing 500 kg moving against a resistance of 500 N, accelerates from rest to 20 m/s in 100…

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Q: A force acting on a 1.0-kg object is described by the equation F = (2.0x3.5) i N. (a) Plo the force…

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Q: (a) What is the efficiency of an out-of-condition professor who does 2.10 x 105 J of useful work…

A: A) work = 2.1 × 105 J      Food Energy = 500×1000 cal                             = 21× 105 J  B)…

Q: Problem A moving electron has a Kinetic Energy K1. After a net amount of work is done on it, the…

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Q: 27.) W out is always smaller than W in because when a machine is used, not all of the energy it…

A: 27. When a machine is used, due to the friction some of the input energy convert in to thermal…

Q: What are SI and CGS units of work? How are they related? Establish the relationship.

A: The International Unit System is the modern form of the metric system and is the most widely used…

Q: A block of mass 10 kg is moved 10 m to the right over flat ground. If the coefficient of kinetic…

A: The kinetic frictional frictional force acting on the block of mass m moving on a flat surface is…

Q: Explorers in the jungle find an ancient monument in the shape of a large isosceles triangle as shown…

A: Write the expression for the volume of the monument and substitute the corresponding values.…

Q: An 787-kg car skids to a stop across a horizontal surface over a distance of 42.5 m. The average…

A: Given Data: Mass m=787 kg Distance travelled d= 42.5 m Force given F=7160 N

Q: A 5-kg package is pushed 2 m up a ramp that is inclined at 12° above the horizontal by a 100-N force…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub parts for…

Q: (a) What is the efficiency of an out-of-condition professor who does 2.20 ✕ 105 J of useful work…

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Q: A 1.50-kg book is sliding along a rough horizontal surface. At point A it is moving at 3.21 m/s, and…

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Q: How much work is required to lift a 6 kg object from the bottom of a  10 meter deep well?

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Q: Now Jed and Kadia tackle a homework problem: An object of mass m, = 13 kg and velocity v, 5.5 m/s…

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Q: A 55-kg pole vaulter running at 10 m/s vaults over the bar. Her speed when she is above the bar is…

A: The change in potential energy of the pole vaulter will be equal to her change in kinetic…

Q: (a) What is the efficiency of an out-of-condition professor who does 2.10 x 10° J of useful work…

A: a) We know that, efficiency= (output/input)x100 So here output is 2.10×10^5 joule and input is…

Q: Note: Round off your answer in the nearest whole number. No need to include the unit. Work, Power,…

A: Write the position of the car in cartesian vector form.

Q: 4. A car has run out of gas. Fortunately, there is a gas station nearby. You must exert a force of…

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Q: I just need a refresher. Taking a physics class. Would you mind working out step by step an…

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Q: You set your stationary bike on a high 80-NN friction-like resistive force and cycle for 30 minmin…

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Q: Work And Energy Problem Solving 5. Initially at rest, a block with a mass of 6 kg above a…

A: Disclaimer:“Since you have asked multiple question, we will solve the first question for you. If you…

Instantaneous Power

Power is defined in physics as the amount of energy transmitted or transformed per unit time. The watt is the unit of electricity in the International System of Units, equivalent to one joule per second.