Two rocks, one of mass 30 kg and the other of mass 60 kg, are separated by a distance of 1.0 m. They exert a gravitational force on each other of magnitude F. Which other pair of rocks exert a force of magnitude F on each other? A. a rock of mass 100 kg and a rock of mass 18 kg, separated by 1.0 m
B. two rocks, each of mass 45 kg, separated by 1.5 m
C. two rocks, each of mass 45 kg, separated by 1.0 m
two rocks, each of mass 60 kg, separated by 2.0 m

The act of moving from one place to another. a. locomotor b. aerobic c. stationary d. static

How to calculate voltage drop in a series circuit

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.