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A cylinder which is in a horizontal position contains an unknown noble gas at 4.63 × 104 Pa and is sealed with a massless piston. The piston is slowly, isobarically moved inward 18.9 cm which removes 1.50 × 104 J of heat from the gas. If the piston has a radius of 30.5 cm, calculate the change in internal energy of the system.
I put a packing peanut on top of it, and it only took one rotation--or crank--to knock the material off from the machine and onto the ground. mass of the peanut=.001 kg, distance from the machine to the peanut=.0005m.
A boat is traveling upstream at 20 km/h with respect to the water of a river. The water is flowing at 4.0 km/h with respect to the ground. What is the speed of the boat with respect to the ground
The electric motor of a model train accelerates the train from rest to 0.580 m/s in 33.0 ms. the total mass of the train is 563 g. Find out the average power delivered to the train during its acceleration. The units need to W for the final answer.
Illustrate what is the magnitude of the normal force exerted on the car by the walls of the cylinder at point B (at the top of the vertical circle)?
From the shape of total energy vs. time plot, what can you conclude about the conservation of mechanical energy in your mass and spring system.
A wind is blowing straight from north to south at an unknown speed. When you hold up a piece of thread you can see that the wind stretches it out so that it points from your hand to the south. What is the speed of the wind relative to the ground
A cat is trying to jump onto a countertop that is 1m tall from 0.3m away. The cat's initial jump speed (magnitude of the total initial velocity) is 10m/s
Charges of 3.00 nC, -2.00 nC, -7.00 nC, and 1.00 nC are contained inside a rectangular box with length 1.00 m, width 2.00 m, and height 2.50 m. Outside the box are charges of 1.00 nC and 4.00 nC. What is the electric flux through the surface of th..
A steel beam that is 7.00m long weighs 330N. It rests on two supports, 3.00m apart, with equal amounts of beam extending from each end. Suki, who weighs 505 N, stands on the beam in the center and then walks toward one end. How close to the end can s..
The displacement of a particle moving under uniform acceleration is some function of elapsed time and acceleration. Suppose we write this displacement as: s=ka^mt^n where k is the dimensionless constant.
Express the power in terms of some or all of the variables given in the problem introduction.
An object is placed 10.0\; cm in front of an unknown type of mirror that produces an erect image that is 3.11 times larger than the original object. What is the focal length of the mirror
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