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A sphere is hung by a string from the ceiling of a van. When the van is stationary, the sphere hangs vertically. However, when the van accelerates, the sphere swings backward so that the string creates an angle of θ with respect to the vertical. Determine the acceleration of the van when θ =11.0 degree.
q. a small block with a mass of 0.170 kg is attached to a cord passing through the hole in a frictionless horizontal
One of the highest power lasers in the world sits on a table in the General Research Lab Building at Colorado of Donkeys. It emits pulses that last approximately 23.0 fs(10-15 seconds), and contain 95.0 mJ of energy.
Suppose you form a dipole from two point charges (with a magnitude of charge, q). the postive charge is located at the point x=y=0, z=d/2. and the negative charge is located at x=y=0, z=-d/2. determine the magnitude of the electric field along the..
A nonconducting solid sphere of radius R has a volume charge density that is proportional to the distance from the center. That is, ? = Ar for r R, where A is a constant. (Use the following as necessary: 0, A, r, and R, as necessary.)
A movie stuntwoman drops from a helicopter that is 29.0 above ground and is moving with a constant velocity whose components are 8.00 upward and 18.0 horizontal and toward south. You can ignore air resistance.Where on the ground (relative to the p..
A bicycle has wheels of radius 0.32 m. Each wheel has a rotationalinertia of 0.080 kg*m2 about its axle. The total mass of the bicycle includingthe wheels and the rider is 79 kg.
A friend who is 480 cm tall stands 2.0m from a plane wall mirror. How tall must the mirror be if you are to see all of your friend in the mirror
A Baseball player rounds third base and is heading for home when he is signalled by the base coach to slide. find the coefficient of kinetic friction between him and the ground
A small moon of a giant planet has an orbital period of 1.43 days and an orbital radius of 4.69 multiply.gif 105 km. determine the mass of the planet
A gymnast with mass m1 = 42 kg is on a balance beam that sits on (but is not attached to) two supports. The beam has a mass m2 = 106 kg and length L = 5 m. Each support is 1/3 of the way from each end. at first the gymnast stands at the left end of..
A monatomic ideal gas at high temperature T in a discharge tube has a triply degenerate excited state at an energy e above the ground state, Find the ratio population of the excited state to that of the ground state
A string under a tension of 47.00N is used to whirl a rock in a horizontal circle of radius 2.60 m at a speed of 21.0 m/s. The string is pulled in and the speed of the rock increases.
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