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During a tennis match, a player serves the ball at a speed s, with the center of the ball leaving the racquet at angle below the horizontal at a height y0. The net is a distance d away and has a height h. When the ball is directly over the net, what is the distance between them? Express your answer in terms of the given variables and the gravitational acceleration g.
An LRC series circuit with R = 100 Omega, L = 56mH, and C =1.7 muF is powered by an ac voltage source of peak voltage V0 = 210 V, Determine the phase angle of the source voltage relative to the current
A wire loop of radius 0.1 m has a 2-ohm resistance. A uniform magnetic field perpendicular to the plane of the loop increases from zero to 2 T in 0.01 s
A 47 kg person, standing 0.980 m from the axis, begins to run on the disk in a circular path and has a tangential speed of 3.10 m/s relative to the ground. Find resulting angular speed (in rad/s) of the disk.
A ?ywheel in the form of a heavy circular disk of diame
A 73 trampoline artist jumps vertically upward from the top of a platform with a speed of 4.0. If the trampoline behaves like a spring of spring constant 6.2×104, how far does he depress it.
an electron was accelerated from rest through a potential difference of 9900 v. what is its speed? the mass of an
An electron is in a certain energy state in a one-dimensional, infinite potential well from x = 0 to x = L = 200pm. What is the frequency of the photon that is emitted
A 80-g bullet is fired from a rifle having a barrel 0.582 m long. Choose the origin to be at the location where the bullet begins to move. Then the force (in newtons) exerted by the expanding gas on the bullet is 14100 + 9100x - 24250x2, where x is i..
A planet's moon travels in an approximately circular orbit ofradius 7.0 x 107 m with a period of 6 h 29 min. Calculate the mass of the planet from this information
A cylindrical tank is to be designed to contain 5kg of compressed nitrogen at a pressure of 20MPa and temperature of 25?C. What are the external dimensions
Blocks A (mass 6.50kg ) and B (mass 15.00kg ) move on a frictionless, horizontal surface. Initially, block B is at rest and block A is moving toward it at 10.0m/s . The blocks are equipped with ideal spring bumpers.
in 1993 the radius of hurricane emily was about 350 kmh. the wind speed near the center eye of the hurricane whose
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