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A solid disk of radius R, mass 2.39 kg is spinning at angular velocity 60.6 rpm about a vertical axis. A solid disk of radius 2R drops concentrically on the first, eventually the two cease to slip relative to each other and end up spinning at 19.2 rpm. What is the mass of the second disk?
An object 0.480cm tall is placed 14.0cm to the left of the vertex of a concave spherical mirror having a radius of curvature of 21.0cm, Find the orientation (erect or inverted) and the nature (real or virtual) of the image
A spaceship leaves Earth traveling at 0.65 c. A second spaceship leaves the first at a speed of 0.80 c with respect to the first. Calculate the speed of the second ship with respect to Earth if it is fired directly backward toward Earth
suppose that both cars start at the same point, how much sooner does the faster car arrive at a destination 35 km away.
A small coin, initially at rest, begins falling. If the clock starts when the coin begins to fall, what is the magnitude of the coin\'s displacement
Two small spheres spaced 20centimetres apart have equal charge. How many excess electrons should be present on each sphere if magnitude of the force of repulsion between them is newtons.
A rock is thrown vertically up at 6.7 m/s. Has the rock made it to the highest point in the path
A yo-yo of mass 0.10kg and a radius of 0.03 m is released from rest, with the free end of the yo-yo string held fixed. Find the acceleration of the yo-yo
A conducting slab (think of a large flat sheet of metal) is large compared to the size of individual particles and molecules, Where does the excess charge reside
A water hose of internal diameter 12.5 mm is used to fill a bucket. It is noted that 8L of fresh water (about 2 gallons) is collected in 1 minute. what is the rate of flow expressed as m^3/sec
Suppose that you are traveling on board a spacecraft that is moving with respect to the earth at a speed of 0.946c. calculate your breathing rate
Starting from rest, a 1.8 10-4-kg flea springs straight upward. While the flea is pushing off from the ground, What is the flea's speed when it leaves the ground
It has been suggested that rotating cylinders about 12 mi long and 5.1 mi in diameter be placed in space and used as colonies. What angular speed should such a cylinder have so that the centripetal acceleration at its surface equals free-fall acce..
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