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A steel piano wire 1.65 m long has a crosssectional area of 0.00922 cm2 . When under a tension of 80.9 N , how much does it stretch? Young's modulus for the wire is 2 × 1011 N/m2. Answer in units of mm.
A speck of clay of mass m = 0.01 kg strikes and stick to a wooden block of mass M = 0.99 kg, which rests on a frictionless horizontal surface and is attached to a spring with spring constant k = 100 N/m. The impact compresses the spring 10 cm. Fi..
You would like to store 8.9J of energy in the magnetic field of a solenoid. What is the magnitude of the magnetic field inside the solenoid
The distance a car travels on a tank of gasoline is a random variable.
An air rifle uses aspring to shoot a 5.0 gram projectile straight up in the air. what was the average force of air resistance on the projectile
a 10 cubic feet tank contains gas at a pressure of 500 psia temperature of 85 degrees fahrenheit and a weight of 25
a moving rod is observed to have a lenght of 2m and to be oriented at an angle of 30 degrees with respect to the direction of motion. what is the orentation angle in the proper frame
A potter's wheel -- a thick stone disk of radius 0.500 m and mass 110 kg -- is freely rotating at 50.0 rev/min. Find the effective coefficient of kinetic friction between the wheel and the rag
An illusionist causes a valuable piece of jewelry apparently to disappear by dropping it in a pool of water directly under the center of a circular platform floating on the surface. Find the minimum diameter of the platform that would prevent the ..
The mirror is stationary with respect to S. A light pulse emitted by the rocket travels toward the mirror and is reflected back to the rocket. The front of the rocket is a distance 1.88 × 10 ^12 m from the mirror (as measured by observers in S) at..
A 82 kg ice hockey player standing on a frictionless sheet ofice throws a bowling ball horizontally with a speed of 2.3m/s. With what speed does the hockey player recoil
Lightning bolts can carry currents up to approximately 20 kA. We can model such a current as the equivalent of a very long, straight wire. If you were unfortunate enough to be 5.1 m away from such a lightning bolt, how large a magnetic field would y..
A cylindrical shell of length 150 m and radius 7 cm carries a uniform surface charge density is 13 nC/m2. What is the total charge on the shell
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