A 2.5 kg rock is released from rest at the surface of a pond 1.8m deep. As the rock falls, a constant upward force of 4.3N is exerted on it by water resistance. Let y=0 be at the bottom of the pond. A) Calculate the nonconservative work, Wnc, done by water resistance on the rock when the depth of the rock below the water's surface is 1.0 m. B) Calculate the gravitational potential energy of the system,U, when the depth of the rock below the water's surface is 1.0m. C) Calculate the kinetic energy of the rock, K, when the depth of the rock below the water's surface is 1.0m. D) Calculate the total mechanical energy of the system, E, when the depth of the rock below the water's surface is 1.0m

Q: Consider the following figure. P( MPa) 10 8. 6. 2 V (m³) 2 4 6 8 10 12 (a) Determine the work done…

A: Work done = Area under the curve in (P-V) coordinates,Work done = A1+A2+A3 = 3*(12-3) +…

Q: The Kingda Ka roller coaster at Six Flags Great Adventure and Safari in New Jersey currently holds…

A:

Q: A system loses 650 J of potential energy. In the process, it does 670 J of work on the environment…

A:

Q: carnot engine extracts 1200J of energy from a hot reservoir. What is the amount of work done by it?…

A: B

Q: (a) How much work is done by the gravitational force on the crate? (b) Determine the increase in…

A:

Q: A woman fires a rifle with barrel length of 0.6200 m. Let (0, 0) be where the 150 g bullet begins to…

A: To calculate the work done by the gas on the bullet, we need to integrate the force over the…

Q: How much work does a supermarket checkout attendant do on a can of soup he pushes 0.410 m…

A: Write the equation for the work done. Work done (W)=Force F×displacementd

Q: A machinist polishes a 0.50-kg copper fitting with a piece of emery cloth for 2.0 min. He moves the…

A:

Q: How much work does a supermarket checkout attendant do on a can of soup he pushes 0.550 m…

A:

Q: 1 the bullet travels in the rdredion. The force exe gas on the buet is (1600 10,00-2400)N where s in…

A: Given:-  F =  (16,000 + 10,000x - 24,000x2) N  A woman fires a rifle with barrel length of 0.5400 m…

Q: An underground salt cavern has approximate dimensions of 100m x 500m x 3m. The underground salt…

A:

Q: A 1600 kg car steadily accelerates from rest to 60 mi/hr over a 2.8 second time span. How much work…

A: Given:mass of car, m = 1600 kgfinal velocity, vf = 60 mi/hr = 26.816 m/s

Q: Find the work done (in joules) to do so if the separation between points A and B is 35 mm.

A:

Q: An assistant for a football team carries a 26.0 kg cooler of water from the top row of the stadium,…

A: We kno that work done  W=Fdcosθ a) F=26*9.81=255.06  angle θ=180 Wok done by the assistant…

Q: A 55kg student runs up a flight of stairs in 20s. The distance and height of the stairs are shown.…

A: The gravitational potential energy of the reference level is zero. According to the work-energy…

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: How much work does a supermarket checkout attendant do on a can of soup he pushes 0.830 m…

A: Given,

Q: A 55kg student runs up a flight of stairs in 20s. The distance and height of the stairs are shown.…

A: Initially, the student is at rest, and height also zero. So initial energy is zero. a. Initial…

Q: How much work does a supermarket checkout attendant do on a can of soup he pushes 0.870 m…

A: Given: The applied force is 5.5 N. The displacement of the object is 0.87 m.

Q: A spring-loaded toy gun is used to shoot a ball straight up in the air. (Eigure 1)The ball reaches a…

A: Note : As per guidelines, I can only answer a single question for you, I hope this is of great…

Q: Problem 11  A cable of density p pounds per foot is used to lift w pounds of coal up a mineshaft…

A:

Q: Question 16 A 2.9-kg cannonball is fired straight up with an initial velocity of 39 m/s. Taking the…

A:

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

A:

Q: A) Explain the Law of Conservation of Energy in the context of this problem.

A: The law of conservation of energy states that the total energy of any system during any process…

Q: Shouldn't delta T be a negative value since Tf - Ti  = 50C - 110C = - 60C, so the work done would be…

A: yes indeed! work will be negative.so change in temperature is negative and temperature is negative.

Q: How much power is needed to lift a 750 kg elephant 14.3 m in 30.0 seconds?

A: Given data:  Mass (m) = 750 kg Height (h) = 14.3 m Time (t) = 30.0 s Required: Power (P)