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A bridge over a valley is 300m above the bottom of the valley. A bungee jumper plans to leap from the bridge and barely touch the bottom of the valley. If the body mass of the jumper is 160lb, the spring constant of the bungee cord is k=50N/m,
a) How long of a bungee cord does the jumper need?
b) What is the highest speed of the jumper?
from the scattering of sunlight, J. J. Thomson calculated the classical radius of an electron as having the value 2.82 ×10-15 m. Sunlight with an intensity of 500 W/m2 falls on a disk with this radius.
question 1 polymer diffusion the figure below indicates the result of a particle tracking experiment where lateral
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The pulley system in Figure below is used to lift a 52-kg crate. Note that a chain connects the upper pulley to the ceiling, determine the tension in each chain
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