What was Newton's great insight that related a falling apple to the Moon? Explain in 5-7 sentences.

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is

Electromagnetic induction. a coil of wire contains n turns and has an electrical resistance r. the radius of each turn is a. initially, inside the coil there exists a uniform magnetic field of magnitude b0 parallel to the axis of the coil. the magnetic field is then reduced slowly. the current induced in the coil is i. how long does it take for the magnitude of the uniform field to drop to zero?

Which of the following are guidelines to follow for obtaining accurate observations