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At a winter fair a 65.5-kg stunt man is shot from a horizontal cannon that rests at the edge of a frozen lake. The human projectile is cast onto the smooth ice, slides some distance, and grabs the end of a long rope whose other end is attached to a pivot that is firmly anchored to the ice. The rope initially lies perpendicular to the stunt man\'s line of motion, and when he grabs it, he starts sliding in circular motion about the pivot and continues to revolve until he comes to rest. A tensometer on the rope indicates a tension of 811 N at the beginning of the circular motion. With a coefficient of kinetic friction of 0.0453, how many revolutions does the stunt man make? Take g = 9.81 m/s2. Assume the rope supplies all the centripetal force.
A beam contains 8.1x106 doubly charged positive ionsper cubic centimeter, all of which are moving north with a speed of7.3x105 m/s. What is the magnitude of the current density?
For a certain change, the value of ëU is -2.37 kJ. During the change, system absorbs 650 joules. How much work did the system do.
A stone is dropped at t = 0. A second stone, with 6 times the mass of the first, How far below the release point is the center of mass of the two stones at t = 340 ms
The outer edge of the grooved area of a long-playing record is at a radial distance 35 cm from the center; What is the radial speed of the needle
A man with mass m1 = 61.0 kg stands at the left end of a uniform boat with mass m2 = 169.0 kg and a length L = 2.7 m. At what location does the man end up
A 250 N beam hangs from a cable. The beam moves at a constant velocity. What is the force on the cable
Calculate the electric field(magnitude and direction) at the center of a square 52.5 on a side if one corner is occupied by a - 38.8 charge
A 76 g, 31 cm long road hang vertically on frictionless horizontal axle passing through its center a 10 gram ball of clay travelling horizontally at 2.6m/s hits and stick to the very bottom tip of the rod. To what maximum angle, measured from ..
If it actually hits the ground with a speed of 7.80 m/s, what is the magnitude of the average force of air resistance exerted on it
If the elastic limit of steel is 5.0 multiplied by 108 Pa, determine the minimum diameter a steel wire can have
At the time the switch is closed completing a simple LC circuit, the capacitor has 3.4 J of stored energy and the inductor has no stored energy. What is the energy stored in the inductor at that time
A solar collector is placed in direct sunlight where it absorbs energy at the rate of 880 J/s for each square meter of its surface. What equilibrium temperature does the collector reach
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