What is the S. I. unit of C. G.S ?​

Which statement is true? a. kepler's laws apply only to the motion of earth. b. kepler's laws can be used to predict eclipses. c. kepler's laws are true for a central force that is directly proportional to distance. d. kepler's laws can be deduced from newton's laws of motion and gravity.

How to calculate voltage drop in a series circuit

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