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A jet pilot takes his aircraft in a vertical loop (a) If the jet is moving at a speed of 1200 km/h at the lowest point of the loop, determine the minimum radius of the circle so that the centripetal acceleration at the lowest point does not exceed 6.0 g's. m (b) Calculate also the 80 kg pilot's effective weight (the force with which the seat pushes up on him) at the bottom of the circle. N (c) Calculate the pilot's effective weight at the top of the circle. (Assume the same speed.)
A 2.0kg wood block is launched up a wooden ramp that is inclined at a 35? angle. What vertical height does the block reach above its starting point
A rescue plane wants to drop supplies to isolated mountain climbers on a rocky ridge 235 m below. With what speed do the supplies land in the latter case
An object with a mass of 23 kg lies on a horizontal frictionless surface. What is the normal force on the object in Newtons
A string with a mass of 31 g and a length of 2 m is stretched under a tension of 67 N. How much power must be supplied to the string
A charged capacitor is connected to an inductor. At time t=0 the charge on the capacitor is Q= 6uC. What is the amplitude of the current at that same instant
If the electric field strength in air exceeds 3.0 multiplied by 106 N/C, the air becomes a conductor. Using this fact, determine the maximum amount of charge that can be carried by a metal sphere 3.1 m in radius.
A playground merry-go-round of radius R = 2 m has a moment of inertia I = 275 kg•m2 and is rotating at 14 rev/min about a frictionless vertical axle.
A person is pushing a wheelbarrow along a ramp that makes an angle of 34 degrees with the horizontal. What is the total force the person must apply
A 7 kg sample of mercury is completely solidified and liberates 110 kJ of energy. What is the original temperature of the mercury? (The melting point of mercury is 234 K, the heat of fusion of mercury is 11.3 kJ/kg, and the specific heat of mercury i..
Firemen are shooting a stream of water at a burning building. A high-pressure hose shoots out the water with a speed of 23.0m/s as it leaves the hose nozzle. Find the angle of elevation of the hose
A rock is thrown vertically upward with a speed of 15.0m/s from the roof of a building that is 40.0m above the ground, What is the speed of the rock just before it strikes the ground
A fiber optic cable has n=1.4 in the center and n=1.2 for cladding. If a light pulse is incident along the cable's axis, what is the maximum angle the cable can be bent
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