Aforce f acts on an object undergoing a displacement s, the force being oriented at an angle θ with respect to the displacement. which one of the following correctly describes all of the circumstances under which the work done by the force is zero?

Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground

A10nc charge sits at a point in space where the magnitude of the electric field is 1500 n/c. what will the magnitude of the field be if the 10 nc charge is replaced by a 20 nc charge? assume the system is big enough to consider the charges as small test charges.

The electric field direction is defined by the direction of the force felt by (select one of the following answers): 1. a negative charge. 2. a positive charge. 3. both positive and negative charges.