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A neutron star and a black hole are 2.900e+12 m from each other at a certain point in their orbit. The neutron star has a mass of 2.78×1030 kg and the black hole has a mass of 9.94×1030 kg. What is the magnitude of the gravitational attraction between the two?
Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. Based on this measurement, what is the work function for this metal
the space shuttle is in a 230 mile high orbit. what are the shuttles orbital period in minutes and its speed.
The drawing shows a person (weight W = 582 N, L1 = 0.841 m, L2 = 0.406 m) doing push-ups. Find the normal force exerted by the floor on each hand
A swimmer looks upward from the bottom of a 3.5-m-deep swimming pool. How far from the swimmer does the board appear to be
A 70 m3 incompressible box is completely submerged in a fluid. What volume of fluid is displaced by the box if the fluid is air? The density of air is 1.2 kg/m3
Calculate the nonconservative work
q1. a lightbulb emits a spherical wave. if the intensity of the emitted light is 1.2 wm2 at a distance of 2.5 m from
A wire that is carrying a current is placed in a uniform magnetic field pointing out of the page. What direction does the force on the wire point
Consider a book of mass 10 kg on a frictionless incline that makes an angle of 40? with the horizontal. Find the acceleration of the book down the incline
what is the frequency of vibration of the string. If the shot was launched from 6.00 f above the ground at an initial angle of 42.0 degrees , what was its initial speed.
A 41 kg crate, starting from rest, is pulled across a floor with the constant horizontal force of 250 N. For the first 10m the floor is frictionless, and for the next 11.00 m the coefficient of friction is 0.17. What is the final speed of the crat..
A 55 kg meteorite buries itself 4.5 m into soft mud. What was the speed of the meteorite when it initially impacted the mud
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