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1 a neutron star is formed when an object like the sun collapses. Suppose a uniform spherical star of mass M and radius R collapses to a uniform sphere of radius 10^-5 R. If the original star has a rotation rate of 1 rev each 25 days, (like the sun) what will be the rotation rate of the neutron star? WHY? Please give detailed explanation for BOTH questions.
#2 a large horizontal disk is rotating on a vertical axis through its center; for the disk I = 4000 kg m^2. The disk is coasting at a rate of .150 rev/s when a 90 kg person drops onto the disk from an overhanging tree limb. The person lands and remains at a distance of 3 m from the axis of rotation. What will be the rate of rotation after the person has landed
a rocket of rest length 1000 meters moves with respect to us at v 35c. there are two clocks on the ship one in the
To protect their young in the nest, peregrine falcons will fly into birds of prey (such as ravens) at high speed. What was the raven's speed right after the collision
Two 1.70 centimeter diameter disks spaced 1.80 millimeter apart from a parallel-plate capacitor. Determine the voltage across the capacitor
A container with a one-liter capacity at 27°C is filled with helium to a pressure of 2 atm. (1 atm = 1.0x10^5 N/m^2.) How many moles of helium does it hold
If 80g of ice at -20 oC is placed in 200g of water at 15 oC, how much ice melts, The specific heat of ice is 0.5 cal/g-K
In recent years it has been possible to buy a 1.0 Fcapacitor. This is an enormously large amount of capacitance. How long must your inductor be
TV broadcast antennas are the tallest artificial structures on Earth. In 1987, a 72.0-kg physicist placed himself, By how much was the antenna compressed
What is the minimum coefficient of static friction between the block and the ramp, if the block is not to slide back down the ramp - Draw a complete free body diagram for the block
A freely falling object requires 1.20s to travel the last 33.0 m before ithits the ground. From what height above the ground did it fall
A stone is dropped into the water from a bridge 144ft above thewater. another astone is thrown vertically down 1s after thefirst is dropped. what was the initial speed of the second stone
A ball, initially at y = 0, is thrown straight down and takes 1.40 s to move 13.8 m in the - y direction. Calculate the initial velocity of the ball
A red car and a blue car are both travelimg east, with the red car 250 m behind the blue car. how far will the blue car travle before the red car cathes up and passes it
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