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A movie stuntman (mass 91.4 kg) stands on a window ledge 6.88 m above the floor. Grabbing a rope attached to a chandelier, he swings down to grapple by the movie’s villain (mass 66.9kg), who is standing directly under the chandelier. (Suppose that the stuntman’s center of mass moves downward 6.88 m. He releases the rope just as he reaches the villain) If the coefficient of kinetic friction of their bodies by the floor is uk = 0.24, how far do they slide?
The skis have a thrust of 189 N and a coefficient of kinetic friction on snow of 0.1. Unfortunatately, the skis run out of fuel after only 9 s. Illustrate what is Sam's top speed?
Two steel guitar strings have the same length. String A has a diameter of 0.60mm and is under 440.0N of tension. Find the ratio of the wave speeds, VA / VB, in these two strings
The generator in a purely inductive AC circuit has an angular frequency of 120π rad/s. If ΔVmax = 132 V and L = 0.130 H, what is the rms current in the circuit?
Multiple-Concept Example 3 provides some pertinent background for this problem. Suppose a single electron orbits about a nucleus containing two protons (+2e), find the magnitude of the electron's centripetal acceleration
The current in a 1.70mm Ã? 1.70mm square aluminum wire is 1.80A. compute the electron drift speed
the 20 g centrifuge at nasas ames research center in mountain view california is a horizonatal cylinderical tube 58 ft
In a physics laboratory experiment, a coil with 200 turns enclosing an area of 12.0 cm^2 is rotated from a position where its plane is perpendicular to the earth's magnetic field to one where its plane is parallel to field.
An antitank weapon fires a 3.0 kg rocket which acquires a speed of 50 m/s after traveling 90 cm down a launching tube. Assuming the rocket was accelerated uniformly, what forces acted on it? Answer in units of kN.
A 64 kg skier coasts up a snow-covered hill that makes an angle of 25° with the horizontal, What is the magnitude of the kinetic frictional force
The electric potential energy stored in the capacitor of a defibrillator is 110 J, and the capacitance is 120 ?F. What is the potential difference across the capacitor plates
Suppose one gallon of gasoline produces 1.1 × 108 J of energy, and this energy is sufficient to operate a car for twenty miles. how many miles could the car go with that energy
A 4 ohm resistor and 10 ohm resistor are connected in series. how much current will flow through the circuit
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