Acrate is pushed up each of the two ramps shown in the diagram below. based on the concept that simple machines make work easier, and assuming that both ramps are friction less, which statement is true?

ramp b requires less force than ramp a.

ramp a requires less force than ramp b.

ramp b raises the crate higher than ramp a.

ramp a raises the crate higher than ramp b.

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.