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Neutron stars are extremely dense objects that are formed from the remnants of supernova explosions. Many rotate very rapidly. Suppose that the mass of a certain spherical neutron star is 2.3 times the mass of the Sun and its radius is 25.3 km. Determine the greatest possible angular speed it can have so that the matter at the surface of the star on its equator is just held in orbit by the gravitational force. Give your answer in revolutions per second.
One day the brakes fail just as the cable car leaves the top on its downward journey. What is the runaway car's speed at the bottom of the hill
A symmetric bi-covex lens has radii of curvature R and athickness of d. Find its focal length using matrix methods
Two polarizers are oriented at 30.0 degrees to one another. Light polarized at a 15.0 degree angle to each polarizer passes through both
a 2.80-m length of wire is held in an east-west direction and moves horizontally to the north with a speed of 0.250
a 69 g ice cube can slide without friction up and down a 35 degree slope. the ice cube is pressed against a spring at
A baseball player hits a triple and ends up on third base. A baseball "diamond" is a square, each side of length 27.4 m, What is the magnitude of the player's displacement
Find out the gravitational potential energy of the child-Earth system relative to the child's lowest position at the following times.
A 20lb weight is suspended from the end of a vertical spring of negligible mass. This much weight stretches the spring by 6nches. It is then pulled 2 inches down and released.
How much work was done by the lift on the automobile.
Find the angular velocity of a centrifuge in which a particle 10 cm from the axis of rotation experiences a radial acceleration of 10^3 times g
A fluid has a density of 1040kg/m^3. If it rises to a height of 1.8cm in a 1.0mm diameter capillary tube, what is the surface tension of the liquid
A stone is thrown directly upward from a height of 30 ft with an initial velocity of 60 ft/sec. Determine the time at which the stone reaches its maximum height
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