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A 20.3?kg chandelier is suspended from the ceiling by four vertical steel wires. Each wire has an unloaded length of 1.15m and a diameter of 1.99mm , and each bears an equal load. Young's modulus for steel is 200?109N/m2 . When the chandelier is hung, how far do the wires stretch?
TV broadcast antennas are the tallest artificial structures on Earth. In 1987, a 72.0-kg physicist placed himself, By how much was the antenna compressed
A rocket is fired at a speed of 75.0 m/s from ground level, at an angle of 60.0 degrees above the horizontal. The rocket is fired toward the ground 11.0-m high wall, which is located 27.0 m away. By how much does the rocket clear the top of the wa..
Calculate the gradient of V in each region
A car takes a sharp turn on a road. Which of the following provides the centripetal force on the car? The weight of the car, frictional force, tangential acceleration, or gravitational force?
A series RCL circuit includes a resistance of 271 ?, an inductive reactance of 661 ?, and a capacitive reactance of 425 ?. What is the voltage of the generator
A 100-kg halfback running north with a speed of 12 m/s is tackled by a 110-kg opponent running south with a speed of 4.0 m/s. If collision is completely inelastic and head-on, compute the speed of the players just after the tackle.
A high-speed flywheel in a motor is spinning at 450 when a power failure suddenly occurs. The flywheel has mass 38.0 and diameter 78 . The power is off for 25 and during this time the flywheel slows due to friction in its axle bearings.
The solar corona is a very hot atmosphere surrounding the visible surface of the sun. Estimate the number density of particles in the solar corona
A block of mass m = 300 g is released from rest and slides down a frictionless track of height h = 70.6 cm. What is the value of the spring constant k
Find the horizontal component of the force exerted on the rod by the hinge and Find the vertical component of the force exerted on the rod by the hinge.
A listener increases his distance from a sound source by a factor of 3.05, what is the change in the sound intensity level in dB
A railroad car of mass 40900 kg moving at 3.35m/s collides and couples with two railroad cars,each of the same mass as the single car and moving in the same direction at 1.53m/s. what is the speed of three cars after the collision.
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