3. People used to believe that if a penny was dropped form the Empire State Building, how fast would it be moving just before impact on the ground? From release of your
hand it takes 45 seconds falling at 9.8 m/s due to gravity.

The electric potential a distance r from a small charge is proportional to what power of the distance from the charge? a. r^-1 b. r c. r^-2 d. r^2

Amagnetic field applies forces on: a)static chargesb)moving chargesc)water flow

Place several e-field sensors at a few points on different equipotential lines, and look at the relationship between the electric field and the equipotential lines. which statement is true? 1-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of higher voltages. 2-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of lower voltages. 3-at any point, the electric field is parallel to the equipotential line at that point.