3. Objects with masses of 0.2 kg and 0.3 kg are separated by 0.15 m. A third object of mass 0.05 kg is placed between them on the line joining the first two objects. a) Find the net gravitational attraction force exerted on the third object if it is placed 0.05 m from the 0.3 kg mass. [3.35x10-N]
b) At what position along the line the third object should be placed for no net gravitational force exerted it. [6.7 cm]​

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.