what is the displacement of a cyclist who travels 1 mile north 1 mile east then finally 1 mile south

When using two-wire cable to feed a 240-v appliance that does not require a neutral wire, you should a. mark both ends of the white wire green. b. use the cable as is. c. use only the black wire. d. mark both ends and any exposed area of the white wire black.

A2k pendulum has a speed of 1 m/s at a height of 1/2 meter

What are two different ways you could find the value of a? explain these methods.