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A "cart" on an air track has a mass of 2 kilogram and a speed of 6 meter per second. It hits another cart (with the same mass) originally at rest and the two stick together. Obtain the speed of the carts after the collision?
In a home laundry dryer, a cylindrical tub containing wet clothes is rotated steadily about a horizontal axis as shown in the figure below. what rate of revolution is needed
A 3.0m long rigid beam with a mass of 130kg is supported at each end. How much upward force does each support exert on the beam
A flat bi-metallic strip consists of alluminium riveted to a strip of iron. When heated, the strip will bend. Which metal will be on the outside of the curve? Why?
What is the speed of a 2.6 (kinetic energy) electron? What is the speed of a 2.6 proton?
a hollow copper wire with an inner diameter of 1.1 mm and an outer diameter of 1.8 mm carries a current of 15 a. what
In an ultra-low-temperature experiment, a collection of sodium atoms enter a special state called a Bose-Einstein condensate in which the index of refraction is 1.57 107
How many signals could fit into 1 MHz of bandwidth if each signal required 100 kHz of bandwidth and the separation between adjacent channels was 10 kHz
A photographic slide is to the left of a lens. The lens projects animage of the slide onto a wall which is a distance of x to the right of the slide. How far is the slide from the lens
A golfer hits a shot to a green that is elevated 3.0 m above the point where the ball is struck. find the speed of the ball just before it lands
a rubber ball is shot straight up from the ground with speed v0. simultaneously a second rubber ball at height h
The first atomic bomb released energy equivalent to20 kilotons of TNT. If 1 ton of TNT releases 4x109 J, how much uranium was consumed through fission in the bomb
An 80 kg skydiver falls through air with a density of 1.15 kg/m3 . Assume that his drag coefficient is C=0.57. What are the terminal speeds in both cases
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