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Two uniform solid cylinders each rotating about its central(longitudinal) axis, have the same mass of 4.92 kg and rotate with the same angular speed of 118rad/s, but they differ in radius .(a) what is the rotational kinetic energy of the smaller cylinder,of radius 0.116? (b) what is the rotational kinetic energy of the larger cylinder of radius 0.691m? (c)now imagine that the smaller cylinder uniformly expands(due to thermal expansion for example) to a new radius of 0.121 m. What is its angular velocity after the expansion?
(hint:what quantity is conserved ).
A typical large orb spider has a mass of 0.50 g. If this spider suspends itself from a single 12-cm-long strand of silk, by how much will the silk stretch
An inductor, a capacitor, and a 64.0-? resistor are connected in series with an AC generator; what is the average power output of the generator
What is the volume flow rate through the smaller pipe? answer in m^3/ second.
A skilled skier knows to jump upward before reaching a downward slope. Consider a jump in which the launch speed V0= 12.5 m/s, how far below the launch level does the skier land
Lasers have been used to suspend spherical glass beads in the Earth's gravitational field. What is the minimum power required for this laser
A parallel plate capacitor is connected to a battery. The space between the plates is filled with air. Find the electric field inside the dielectric
A microscope has an objective lens with a focal length of 16.22 mm and an eyepiece with a focal length of 9.50 mm. what is the actual diameter of the red blood cell
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the fluids inside and outside a cell are good conductors separated by the cell wall which is a dielectric. thus the
A circular loop in the plane of the paper lies in a 0.55T magnetic field pointing into the paper. If the loop's diameter changes from 20 cm to 5 cm what is the magnitude of the average induced emf.
You're an optometrist, mounting a projector at the back of your 4.2m -long exam room, 2.6m above the floor. At what height should you center the pattern on the wall
You're carrying a 3.40 m-long, 23 poles to a construction site when you decide to stop for a rest. You place one end of the pole on a fence post and hold the other end of the pole 35 from its tip.
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