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A bicycle tire pump has a piston with area .44in.2. If a person exerts a force of 30 lb on the pistonwhile inflating a tire, what pressure does this produce on the air in the pump?
A 400kg soccer ball approaches a player horizontally with aspeed of 15.0 m/s. What impulse was delivered to the ball by the player
A 45.0-kg girl is standing on a 133-kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. What is her velocity relative to the surface of ice
An astronaut is traveling in a space vehicle that has a speed of 0.515c relative to Earth. The astronaut measures his pulse rate at 69.0 per minute. What pulse rate does the Earth observer measure
The plates of a parallel-plate capacitor each have an area of 0.1 m2 and are separated by a 0.6 mm thick layer of paper. The capacitor is connected to a 13 V battery. (The dielectric constant for paper is 4.)
A 1110 N man stands in the middle of a frozen pond of radius 4.18m. He is unable to get to the other side because of a lack of friction between his shoes and the ice.
An object of 50.5 N is attached to the free end of a light string wrapped around a reel with a radius of 0.250 m and mass of 3.00 kg. The reel is a solid disk, free to rotate in a vertical plane about the horizontal axis passing through its center..
Two sinusoidal waves of the same period, with amplitudes of 5.5 and 7.5 mm, travel in the same direction along a stretched string; they produce a resultant wave with an amplitude of 12.760 mm. The phase constant of the 5.5 mm wave is 0. What is th..
A jet engine emits sound uniformly in all directions, radiating an acoustic power of 3.23 × 102 kW. If the intensity of the sound at a distance of 40.3 m from the engine is 15.8 W/m^2 calculate the corresponding sound intensity level in dB
The only force acting on a 2.1 kg canister that is moving in an xy plane has a magnitude of 5.4 N. How much work is done on the canister by the 5.4 N force during this time
a 25kg mass hangs by a rope. If the tension in the rope is a constant 200N and the initial velocity of the mass is 3m/s upwards, what is the velocity of the mass after 2 seconds
A major-league catcher gloves a 85 mi/h pitch and brings it to rest in 0.17m. If the force exerted by the catcher is 803 N, what is the mass of the ball.
Six concentric conducting spheres, A, B, C, D, E, and F having radii R, 2R, 3R, 4R, 5R, and 6R, respectively. Spheres B and C are connected by a conducting wire, as are spheres D and E. Determine the equivalent capacitance of this system.
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