Claudia goes bungee jumping. she has a mass of 51 kg.

a. the bungee cord will stretch 5 m when 200 n of force is applied to it. what is the spring constant of the bungee cord?

b. after her jump, claudia hangs from the cord motionless. how stretched is the bungee cord past its natural length?

c. the maximum force the bungee cord can handle without breaking is 15,000 n. how far would you have to stretch it to get it to break?

Askydiver weighing 140 lb (including equipment) falls vertically downward from an altitude of 19,000 ft and opens the parachute after 18 s of free fall. assume that the force of air resistance, which is directed opposite to the velocity, is of magnitude 0.55|v| when the parachute is closed and is of magnitude 14|v| when the parachute is open, where the velocity v is measured in ft/s. assume that acceleration due to gravity has magnitude 32 ft/s/s; remember that weight is the product of mass and gravitational acceleration. (a) find the speed of the skydiver when the parachute opens. (b) find the distance fallen before the parachute opens. (c) what is the limiting velocity vl after the parachute opens? (d) determine how long the sky diver is in the air after the parachute opens. (e) plot the graph of velocity versus time from the beginning of the fall until the skydiver reaches the ground.

Wavelength, frequency, and energy are related. what happens to a wave as it’s wavelength gets shorter?

The charge on a charged sphere is: a)concentrated at its centerb)distributed uniformly throughout its volumec)clustered on its centerd)distributed uniformly over its surface