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In the Bohr model of the hydrogen atom, the electron revolves in acircular orbit around the nucleus. If the radius is 5.3 x 10^(-11)m and the electron circles 6.6 x 10^(15) times per second ,find
a) the speed of the electron
b) the centripetal acceleration of the electron around the atomicnucleus. Indicate the magnitude and direction of the centripetal acceleration.
Suppose that an insulating container of negligible mass contains 0.12 kg of water at a temperature of 4 degrees C. what is the final mass (in kg) of the water in the system
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A stone is thrown at a bell with the speed of 20m/s. The stone strikes the bell and the sound is heard 2.60 s after the stone was released. Speed of sound is 342m/s, how far is the boy from bell.
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A 4.0kg mass is attached to a spring that has a springconstant, k=2500N/m, and is resting on a frictionless horizontal surface. What is the maximum velocity of the block
A 300 hp car engine can deliver that maximum power at 6000 rpm. What is the engine's torque at that speed
A golfer hits a shot to a green that is elevated 3.20 m above the point where the ball is struck. find the speed of the ball just before it lands
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