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Starting from rest, an elevator has a constant acceleration of 0.621 m/s2 for a period of 6.25 sec., after which it travels at a constant velocity for an additional 15.4 sec. find the displacement of the elevator during the period of constant velocity.
You are given a sample of metal and asked to determine its specific heat. You weigh the sample and find that its weight is 25.7N. What is the sample's specific heat
a supertanker with the mass of 3.34^7 kg is moving with a constant velocity .its engines generate a forword thurst of 5.38x10^5 n. determine the magnitude of the upward buoyant force exerted on the tanker by the water
A thin uniform rod (length = 2.01 m, mass = 3.11 kg) is pivoted about a horizontal frictionless pin through one of its ends. What is the angular acceleration of the rod at the instant it is released
Determine the image distance for an object do=7.900 cm from a diverging lens of radius of curvature 6.320 cm and index of refraction 1.800.
A pendulum is made by tying a 550g ball to a 52.0cm -longstring. To what angle does the pendulum swing on the other side
At time t = 0, a projectile is launched from ground level. At t = 2.00 s, it is displaced d = 56 m horizontally, what is its horizontal displacement D from the launch point
A locomotive accelerates a 25-car train along a level track. Every car has a mass of 7.6 ? 104 kg, What is the tension in the coupling between the first car and the locomotive
The intensity of a sound produced by a point source decreases as the square of the distance from the source. What is the maximum distance at which the riveter is still audible
The plumbing in an old house uses lead pipes (which are now considered hazardous). what is the change in the length of the pipe
A particle of mass 1.67×10-27 kg moves with a speed of 2.3×108 m/s relative to an observer. What is the kinetic energy of the particle in the rest frame
A skier of mass 68.4 kg glides down a hill of slope 26.5 degree at constant speed. find the coefficient of friction between her skis and the slope
King Arthur's knights fire cannon from the top of the castle wall. The cannonball is fired at a speed of 60 m/s and an angle of 33. A cannonball that was accidentally dropped from the top of the castle wall hit the moat below in 1.80s.
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