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A compact disk spins with angular velocity 40.8rad/s. The player is turned off, and 2.10s later the CD has stopped. Find its average angular acceleration.
car is driving directly north on the freeway at a speed of 112 km/h, What is the velocity of the truck relative to the car
An AC adapter for a telephone answering machine uses a transformer to reduce the line voltage of 120 V to a voltage of 7.00 V. What is the power drawn from the electric outlet
The motion of a particle is given by x = A sin^3(?t). What is the amplitude of the particle's motion
A) Assuming that the Styrofoam absorbs a negligibly small amount of heat and that no heat was lost to the surroundings, what is the specific heat of the metal? B) Which is more useful for storing heat, this metal or an equal weight of water? defin..
For lead 82Pb206 (atomic mass = 205.974440 u) obtain the binding energy per nucleon (in MeV)
If the perceived frequency becomes constant at 440 Hz, what is terminal speed at the paratrooper? Take the speed sound in air to be 343 m/s and assume the paratrooper always remains below the helicopter.
A 100 mg pith ball hangs by a thread in the center of a parallel-plate capacitor. The capacitor plates are 5.0 cm x 5.0 cm, Draw a free-body-diagram of the pith ball
A 67? resistor, an 9.0?F capacitor, and a 36mHinductor are connected in series in an ac circuit. Calculate the impedance for a source frequency of 300 Hz
A playground carousel is free to rotate about its center on frictionless bearings, and air resistance is negligible. What is the person's mass
Presume the needle moves 7.5 mm from its highest to its lowest position and it makes 26 stitches in 9.1 s. What is the highest needle speed.
A solid aluminum cylinder with density equal to 2700 kg/m3 has the weight equal to 0.66 N in air and the apparent weight of 0.22 N when immersed in an unknown liquid. What is the density of this liquid
Planet A and planet B are in circular orbits around a distant star. Planet A is 7.6 times farther from the star than is planet B... What is the ration of their speeds
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