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At time t=0 a grinding wheel has an angular velocity of 25.0rad/s . It has a constant angular acceleration of 35.0rad/s^2 until a circuit breaker trips at time t = 2.00s . From then on, the wheel turns through an angle of 440rad as it coasts to a stop at constant angular deceleration.
A) Through what total angle did the wheel turn between t=0 and the time it stopped? Express your answer in radians.
B) At what time does the wheel stop? Express your answer in seconds.
C) What was the wheel's angular acceleration as it slowed down? Express your answer in radians per second per second.
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A projectile is fired with an initial speed of 113 m/s at an angle of 60.0° above the horizontal from the top of a cliff 49.0 m high. determine the time to reach maximum height
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The height of the haystack is 1 meter. You press down on topof the stack and discover that to compress the stack by 25cm, What is the haystack's spring constant
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A pair of slits separated by 1.3 mm, are illuminated with monochromatic light of wavelength 573 nm. What is the thickness of the glass
A 330g airtrack cart on a horizontal air track is attached to a string that goes over a pulley with a moment of inertia of 5.00*10^-6 kg*m^2 and a radius of 1.35 cm. Write newtons second law for each of the three objects
A sample of helium behaves as an ideal gas as it is heated atconstant pressure from 273 K to 343 K. what is the mass of helium present
A flywheel for energy storage in a hybrid gasoline-electric car is a ring-shaped rotor of mass 49 kg, designed to rotate at 30000 rpm. What is the ring's diameter
Assume that there is an announcement of a fantastic process capable of putting the contents of physics library on a very smooth postcard. Will it be readable with an electron microscope? Explain.
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