Physics, 16.03.2020 22:40 jarvinmcgillp3dhni
Kate, a bungee jumper, wants to jump off the edge of a bridge that spans a river below. Kate has a mass mmm, and the surface of the bridge is a height hhh above the water. The bungee cord, which has length LLL when unstretched, will first straighten and then stretch as Kate falls. Assume the following: The bungee cord behaves as an ideal spring once it begins to stretch, with spring constant kkk. Kate doesn't actually jump but simply steps off the edge of the bridge and falls straight downward. Kate's height is negligible compared to the length of the bungee cord. Hence, she can be treated as a point particle. Use ggg for the magnitude of the acceleration due to gravity.(a) How far below the bridge will Kate eventually be hanging, onceshe stops oscillating and comes finally to rest? Assume that shedoesn't touch the water.
(b) If Kate just touches the surface of the river on her firstdownward trip (i. e. before the first bounce), what is the springconstant k?
Answers: 1
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Asolid cylinder and a cylindrical shell have the same mass, same radius, and turn on frictionless, horizontal axles. the cylindrical shell has light-weight spokes connecting the shell to the axle. a rope is wrapped around each cylinder and tied to blocks of equal masses that are held the same height above the ground. both blocks are released simultaneously. the ropes do not slip. which block hits the ground first? or is it a tie?
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Physics, 22.06.2019 18:00
Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.
Answers: 1
Kate, a bungee jumper, wants to jump off the edge of a bridge that spans a river below. Kate has a m...
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