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A neutron star has a mass of 2.0 1030 kg (about the mass of oursun) and a radius of 4.8 103 m (about the height of a good-sized mountain). Suppose an object falls from rest near the surface of such a star. How fast would it be moving after ithad fallen a distance of 0.018 m? (Assume that the gravitational forceis constant over the distance of the fall, and that the star is notrotating.)
The skater farthest out has a mass of 58.0 kg and is 7.80 m from the pivot. He is skating at a speed of 6.40 m/s. Find out the magnitude of the centripetal force that acts on him.
A rubber ball of mass 27.5 g is dropped from a height of 1.85 m onto a floor. What impulse was applied to the ball during the collision
a flat mirror and a wall meet at a 45 degree angle. light strikes the mirror 10 meters from the corner at an angle of incidence of 45 degrees
As you ride your 14-kg bicycle on level ground you do some work against a 30N force of air resistance if your mass is 65-kg.What is power you apply to maintain a velocity of 25-km`.a-on level ground b-going up a 5degrees slope?(remember it's a num..
A sample of an unknown material weighs 300 N in air and 200 N when immersed in alcohol. The density of the alcohol is 70% the density of water. determine the volume of the unknown material
A point charge with charge q1 = 2.80?C is held stationary at the origin, How much work W is done by the electrostatic force on the moving point charge
You are to design a tungsten filament light bulb that has a power of 60W when it is connected to 120V at which condition its temperature is expected to be 1020C. You have a tungsten wire of diameter 0.05mm. Calculate the length of filament that yo..
How many photons are emitted during 7.0 s of operation of a red laser pointer? The device outputs 2.5 Watts at a 635 nm wavelength
There are two capacitors of capacitance 5.0uF and 8.0uF are connected in series. Find the equivalent capacitance of the network and the charge on each plate of the capacitors
What is the basic difference between Newtonian Fluids and Non newtonian fluids?
A small rock is thrown vertically upward with a speed of 12.0 from the edge of the roof of a 36.0 tall building. The rock doesn't hit the building on its way back down and lands in the street below. Air resistance can be neglected.
q1. a 35.0-g bullet moving at 475 ms strikes a 3.2-kg bag of flour that is on ice at rest. the bullet passes through
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