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In the final part of its life cycle a particular rotating spherical star expands to four times its normal diameter. Assume the mass remains constant, the mass is uniformly distributed before the expansion and the mass is uniformly distributed after the expansion. How is the period of rotation affected?
A professor's office door is 0.90m wide, 2.2m high, 4.2cm thick; has a mass of 28kg , and pivots on frictionless hinges. What is the moment of inertia of the door
A satellite is in a circular orbit very close to the surface of a spherical planet. The period of the orbit is 1.55 hours. What is density of the planet
a 60 g tennis ball traveling at 30m/s strikes a wall, What is the magnitude of the impulse in the ball
A 2kg uniform cyclinder is released at the top of a 1.53 m 11 degree incline. What is the velocity when it reaches the bottom
Prepare a multiple-step income statement for the year ended December 31, 2012, concluding with earnings per share.
Two waves of the same frequency have amplitudes 1.31 and 2.94. What is the resultant amplitude
A 61 kg bungee jumper jumps from a bridge. She is tied to a bungee cord whose unstretched length is 11m , and falls a total of 32 m. Calculate the maximum acceleration she experiences
A dipole consist Of two charges Of opposite sign And each charge has a magnitude 7.20E-18C. compute the magnitude of the torque(in newton-meters) on the dipole
A 34.0-kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 225 N. What is the final speed of the crate after being pulled these 21.0 m
At 25°C the vapour pressure of pure pentane is 511 torr and that of hexane is 150. torr. What is the mole fraction of hexane in the vapour that is in equilibrium with this solution
A container of volume 23 cm3 is initially filled with air. The container is after that evacuated at 0oC to a pressure of 30 mPa. How many molecules are in the container after evacuation if we suppose that air is an ideal gas.
Starting with the three particle system, find the change in electric potential energy if the alpha particle is allowed to escape to infinity while the two protons remain fixed in place. (Throughout, neglect any radiation effects.)
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