Which refers to the ratio of output force to input force of a machine? A. mechanical advantage
B. average strength
C. total power
D. energy requirement

Which statement best explains why an object weight less on mercury than it does on earth

We put a force of 50n on an object and the acceleration is 100 m/s². what is the mass of the object?

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.