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A torque of 75 N⋅m rotates a solid sphere about an axis that is tangent to the sphere's surface. If the mass of the sphere is 0.25 kg, and the radius of the sphere is 0.15 m, what is the angular acceleration of the sphere?
suppose you had two small boxes each containing 1.0g of protons. if one were placed on the moon by an astronaunt and
A 1348 kg weather rocket is launched straight up. The rocket motor provides a constant acceleration for 13.6 s, then the motor stops. The rocket altitude 29.6 s after launch is 2091 m. You can avoid any effects of air resistance. What was the rock..
A potential difference of ?V = 12.0 V is found to produce a current of 0.40 A in a 3.2 m length of wire with a uniform radius of 0.40 cm, What is the resistivity of the wire
alpha particles of charge q 2e and mass m 6.6 x 10-27 kg are emitted from a radioactive source at a speed of 1.5 x
A 20.0 kg mass at rests decays into a particle that is moving at 0.30c. What is the mass of this new particle
An ambulance driver traveling at 33.0 m/s honks his horn as he sees a motorist ahead on the highway, Calculate the proper frequency of the ambulance's horn
a what minimum amount of energy does this acceleration require from the spaceships fuel assuming perfect efficiency?b
noting that a person standing in a room maintained at 20degc at all times the inner surfaces of the walls floors and
A cart of a mass (8.51 +/- 0.1) g is configured in a setup. Determine the work done by the tension
Students determine the frequencies of standing waves on the horizontal segment of the string, then they raise a beaker of water until the hanging 1.4 kg {\rm kg} sphere is completely submerged.
The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches the base. Evaluate how far does he slide?
a new gaseous species has been made in the laboratory. the number of atoms in each molecule is unknown. measurements of
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