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A 60-foot-long, 950-lb gin pole used to raise sections of a communication tower is suspended by a standard steel cable of 0.110-in.2 cross section with an effective modulus of elasticity of 12 * 106 psi. As the gin pole descends at a constant speed of 30 ft/min, an accident causes the top of the cable, 70 ft above the gin pole, to stop suddenly. Estimate the maximum elongation and maximum tensile stress developed in the cable.
In a collision between a car of mass 1000 kg and a pickup truck of mass 1600 kg, the truck is initially at rest and the car is moving with a velocity 21 m/s. Immediately after the collision, the car is moving with a velocity 2.0 m/s in the same di..
A steel (Young's modulus 2.0 x 1011 N/m2) wire is strung between two supports attached to a ceiling. What is the radius of the wire
What is the mass of a puppy that sits on the other piston and balances the person?
A string with a length of 0.8m is fixed at both ends. what is the frequency associated with its longest wavelength
A spaceship leaving Earth traveling to a distance 2.4 lightyears away at a speed of 0.6c. At the halfway point the spaceship launches the two missles one towards the distant planet and one towards earth both traveling at 0.8c but in opposite direc..
Suppose a 1.83-g nugget of pure gold has zero net charge. What would be its net charge after it has 1.92 % of its electrons removed?
A 2180kg satellite used in a cellular telephone network is in a circular orbit at a height of 750km above the surface of the earth. What is the gravitational force on the satellit
A particle of mass 3 kilogram is attached to the end of a string of length 4 meter, whose other end is fixed. Determine the least horizontal speed with which it must be protected from the lowest point, if it is to describe complete vertical circles
A bear standing on the side of a very still and clear pond is about to take a swipe at a bass just off the bank. how far beneath the water does he believe the fish to be
A transistor to be used in a circuit is rated for a maximum current of 30 mA if operated at 9.0 V.c What is the maximum acceptable power to the transistor
an air-spaced parallel plate capacitor has an initial charge of .05 muc after being connected to a 10 v battery.a what
A 0.629-nm photon collides with a stationary electron. After the collision, the electron moves forward and the photon recoils backwards. Find the momentum of the electron
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