Two ropes are used to support a
stationary weight W. The tensions
in the ropes must:

The functioning of an electron transport chain is analogous to a) a slinky toy going down a flight of stairs. b) a canoe going over a waterfall. c) a person climbing a flight of stairs one step at a time. d) a person leaping from the top to the bottom of a flight of stairs in one jump.

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?

The speed of light can be used to measure the