Which of the following is an example of kinetic energy being converted to potential energy? a. at an ice rink, an ice skater gives another ice skater a gentle push. b. on a factory assembly line, boxes slide down a ramp. c. the cord of a bow-and-arrow is released, propelling the arrow forward. d. a bike rider stops pedaling and lets his bicycle coast up a hill.

In the circuit, the switch s has been open for a long time and r = 125 kohm. it is then suddenly closed. (a) determine the time constant before the switch is closed. s (b) determine the time constant after the switch is closed. _ s (c) let the switch be closed at t = 0. find the current in the switch as a function of time. (use t for time. express your answer in milliamps and seconds.) i(t) =_

Which of the following statement is false

The reason a penny thrown straight up inside a bus will come back to your hand is that you,the bus,the air inside the bus, and the penny are all moving at the same velocity. true or false