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A neutron star has a mass of 2.20 x 10^30 kg (about the mass of our sun) and a radius of 5.0 x 10^3 m (about the height of a good sized mountain). Assume an object falls from rest near the surface of such a star. How fast would it be moving after it had dropped a distance of 0.010 m? (Suppose that the gravitational force is constant over the distance of the fall, and that the star is not rotating.)
Three capacitors with capacitances C1 = 2.9 nF, C2 = 3.1 nF, and C3 = 1.7 nF are wired to a battery with V = 14.3 V, What is the potential drop across capacitor 2
question1a charged particle is fired into a cubical region of space where there is the uniform magnetic field. outer
A force vector points at an angle of 50.6° above the +x axis. It has a y component of +280 newtons. Calculate the magnitude of the force vector.
Consider an ideal gas at 27.0 degrees Celsius and 1.00 atmosphere pressure. What is the length of an edge of each small cube if adjacent cubes touch but don't overlap
An electric motor is plugged into a wall socket and is running at normal speed. Suddenly, some dirt prevents the shaft of the motor from turning quite rapidly. What happens to the back emf of the motor, and what happens to the current that the mot..
A gas, while expanding under isobaric conditions, does 458 J of work. The pressure of the gas is 1.65E+5 Pa, and its initial volume is 1.37E-3 m3. What is the final volume of the gas?
A ski tow operates on a 15.0degrees slope of lenth 300m. The rope moves at 12.0km/h and provides power for 50 riders at onetime, Estimate the power required to operate the tow
Consider the re?ection of light from a soap bubble. The bubble is a thin ?lm of water with air on both sides. Find the minimum thickness (nm) of the bubble so that reflected light constructively interferes
When you are running and want to stop quickly, you must decelerate quickly. Estimate the rate of deceleration of a person running at top speed of 6 {\rm m/s} to come to rest at 2 {\rm s}
A system consisting of an ideal gas at the constant pressure of 150kPa gains 810J of heat. Find the change in volume of the system if the internal energy of the gas increases by 490J
A spring with spring constant 36N/m is attached to the ceiling, and a 5.1-cm-diameter, 1.3kg metal cylinder is attached to its lower end. what length of the cylinder is submerged
A football quarterback throws a pass at an angle of 36°. He releases the pass 3.50 m behind the lineof scrimmage. His receiver left the line of scrimmage 2 s earlier, going straight down-field at a constantspeed of 7.50 m/s.
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