Joshua lifted a 100-newton (N) box by doing 120 joules (J) of work. How high did he lift the box?

What are similarities and differences of reflection, refraction, diffraction and absorption?

Which of the following is a true statement about the acceleration ~a of the pendulum bob ~a is equal to the acceleration due to gravity. ~a is perpendicular to the bob’s trajectory. ~a is equal to the instantaneous rate of change in velocity. ~a is tangent to the bob’s trajectory.

How much work would it take to move a coulomb charge across a 4 volt potential difference?