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A 55 kg engineer leaves her office on the 33rd floor of askyscraper and takes an elevator to the 59th floor. Later shedescends to street level. If the engineer takes her office as thezero for potential energy and if the distance from one floor to thenext is 3.5 m, what is the engineer's potential energy
(a) in her office,
(b) on the 59th floor, and
(c) at street level?
Consider a large uniform rectangle, length L on the long edge and width W on the short edge. Calculate the moment of inertial of the rectangle
A speed ramp at an airport is basically a large conveyor belt on which you can stand and be moved along. What is the speed at which the belt of the ramp is moving
a 10 cubic meter particulate air sample collects 0.1 millicurie of cobalt-60 on its filter. what is the airborne
parachutist with a camera, both descending at a speed of 13 m/s, releases that camera at an altitude of 110-m.
A baseball is hit into the air at an initial speed of 36.7 m/s and an angle of 59.5 ° above the horizontal. At the same time, the center fielder starts running away from the batter and catches the ball 0.740 m above the level at which it was hit. If ..
A certain particle of mass m has a momentum of 0.9mc. (For the following questions, leave all your answers in terms of m and/or c.) a) What is the particle’s speed? (Careful here….the answer is not 0.9c)
A student investigating circular motion places a dime 10 cm from the center of a 33 &1/3-rpm record on a turntable. The record player can accelerate at 1.42 rad/s^2. Why does the dime slide outward
A block with mass m = 17.0 kg rests on a frictionless table and is accelerated by a spring with spring constant k = 4304.0 N/m after being compressed a distance x1 = 0.576 m from the spring’s unstretched length. The floor is frictionless except fo..
A weight lifter lifts a 360-N set of weights from ground level to a position over his head, a vertical distance of 2.05 m. How much work does the weight lifter do
The temperature near the surface of the earth is 310 K. A xenon atom (atomic mass = 131.29 u) has a kinetic energy equal to the average translational kinetic energy, how high up would it go before coming to rest
A car of mass 1430 kg drives in a direction 80o north of east at a latitude 73o in the northern hemisphere with a speed 85.0 km/hr
suppose the insulating qualities of the wall of a house come mainly from a 4.0 inch layer of brick and an r-19 layer of
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