The coulomb, which is the unit of charge, is the charge on one electron. (True or false?)

The coulomb, which is the unit of charge, is the charge on one electron.
 
  Indicate whether the statement is true or false

Question 2

When the engine of your car heats up, the spark plug gap will
 
  A) increase.
  B) decrease.
  C) remain unchanged.
  D) decrease at first and then increase later, so that the two effects cancel once the engine reaches operating temperature.

Question 3

A marble moving 1.48 m/s rolls off the top edge of a 125. cm high table.
 
  (a) How far from the base of the table did it strike the floor?
  (b) How long was it in flight?

Question 4

Mary is 3.00 meters from the center of a merry-go-round. Her tangential speed is 1.88 m/s.
 
  (a) What is her angular speed in rad/s?
  (b) What is her acceleration while her speed remains 1.88 m/s?

Question 5

A mercury barometer
 
  A) is an open tube manometer.
  B) is a closed tube manometer.
  C) measures gauge pressure.
  D) is usually 760. cm tall.
  E) does not contain mercury.