Power is equal to : a. P = Work / Time b. P = Work * Time c. P = Time / Work d. P = Work - Time
Q: 1. A crate of mass 10.0 kg is pulled up a rough incline with an initial speed of 1.50 m/s. The…
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Q: What is the efficiency of a machine that produces 23 J of work from an input of 55 J? A. 32 %…
A: Given data: Work done (Wout) = 23 J Input energy (Ein) = 55 J Required: Efficiency of the machine
Q: 42. The work done when the point of application of the force F is given a displacement d is A dxF…
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Q: What is the work done by the force FD ? A. F,dcos(0°) B. F,dcos(60) C.F,dcos(90°) D. F,dcos(120) M.
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Q: 3. See the figure below. If a 3 kg mass is moved up the first frictionless incline and the same 3 kg…
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Q: Which statement about work is NOT true? OA. Work cannot be negative. B. Work is a scalar. OC. The…
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Q: A large hoist is lifting a 2000 kg automobile. There is a gauge on the hoist that displays its power…
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Q: 1. How much work would a 60.0 kg person do in climbing from the surface of the Earth to the top of a…
A: We are given weight of person. We are also given the height of mountain. The work done is the…
Q: . A large box slides first up, and then down, an incline. The incline has friction. Which of the…
A: Friction force tends to oppose the motion relative to the surface in contact. Thus friction force…
Q: 2. An 8.0kg box slides down a surface that is inclined at 53° below the horizontal at a distance of…
A: (A) The work done due to friction is, Wfriction= Ffriction.d Here, " Wfriction is the work done due…
Q: An elevatoris able to raise 1,000kg to a height of 40m in 15 seconds. a. How much work does the…
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Q: 500 joules of work was done in 10 seconds, the power used was A. 0.025 watts B. 0.025 N C. 40 N D.…
A: Given value--- work = 500 J. time = 10 sec. We need to find--- Power ?
Q: The dimensional formula of kinetic energy is O a. M L^2 T^-1 O b. M L^2 T c. M L^2 T^-2 d. ML T^-2
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Q: A box is pushed across the floor for a distance of 5 meters with an inclined force of 50 Newtons,…
A: Given: The applied force is 50 N. The angle of the force is 20o with the horizontal. The…
Q: A 25 kg box is pushed up a ramp that makes a 15 degree angle with the horizontal. The ramp is 15…
A: (a)Work done by ramp is zero when friction is negligible. (b)Work done by gravity is:-…
Q: Work 2. An 8.0kg box slides down a surface that is inclined at 53° below the horizontal at a…
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Q: Match each unit with the physics concept it represents. force а. Newtons work b. watt mechanical…
A: Match each unit with the physical concept
Q: A Three point charges are individually brought from intinity and placed at the positim an Shown in…
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Q: Answer: Question 5: Suppose an airplane, Janding on a runway with an initial speed of 45 m/s, slows…
A: These question are based on non uniform velocity but constant acceleration. So we can apply…
Q: A 45 kg skier starts from rest and skies down a hill that is angled at 17 degrees from horizontal.…
A: Work done is given as the dot product of force vector and displacement vector . Also according to…
Q: A box is being pushed to the right with 112N of force. The box travels a total of 1.5m to the right.…
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Q: based on the definition work vs. energy provide an example of work vs. energy in your daily life.
A: Given Data: Work vs. energy To Determine: An example of work vs energy in daily life.
Q: One watt-hour is equivalent to: A. 6.3 x 103 J B. 6.3 x 10-7 J C. 3.6 x 103 J D. 3.6 x 10-3 J
A: Watt is the unit of power, and hour is the unit of time. Since power is the ratio of energy and…
Q: Which of the following statements are TRUE? A. Work is a scalar physical quantity. B. Work can be…
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Q: An elevator weighs 3600 N and must be lifted at a constant speed a vertical distance of 2.5 m in…
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Q: 12. When you go upstairs, you a. do more work when you walk than when you run b. do less work when…
A: 12.) Work depends on force and displacement only as force acting during running or walking is weight…
Q: Which of the following statements are FALSE? A Work is a scalar physical quantity. B. Work can be…
A: Work done is defined as product of force and displacement in direction of applied force . If force…
Q: Macth each term to its correct description. Column A 1. 2. 3. 4. 5. 6. 7. I Work Joule Watt Machine…
A: The terms in the questions are interrelated to each other and they are very important in physics,…
Q: 5. If the sign for work is negative, * O a. Kinetic energy is increasing. O b. Kinetic energy is…
A: work energy theorem. Work done is equal to change in Kinetic energy. W = K.E 2- K.E 1 K.E. 2 -…
Q: A 5 kg block is set into motion at a rough inclined plane by angle 30 with an initial speed of 8 m/s…
A: Part-a Given: The mass of the block m = 5 kg. The inclination angle of the incline θ = 30o. The…
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