5. Which of the following is velocity? * 2 points
A. 20 m/s
B. 40 m/s east
C. 40 m
D. 20 m

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?

You can watch static electricity in action by rubbing an inflated balloon against your hair. your hair will actually stand on its end! it does this because each hair becomes charged, and they all repel one another.