a force of 20 N acted on a ball thereby imparting an impulse of 70 Ns to the ball. For how long did the force act on the ball?

An astronomer observes an asteroid in the solar system. He notes that the asteroid is three times farther from the Sun than Earth is. How far away from the Sun is the asteroid in astronomical units?

The notation specific to the organization or arrangement of electrons within orbitals surrounding the nucleus of an atom.

What is a Projectile Motion

Which of the following statements is true? Chemical reactions are the same as atomic reactions. Nuclear power can't be used to do beneficial work. The sun uses nuclear fusion reactions to generate heat.

A rake is held so that its input arm is 0.4 meters and its output arm is 1.0 meters. What is the mechanical advantage of the rake?

Which statement is true? Select one of the options below as your answer: A. Quarks always occur in groups with leptons. B. Quarks always occur independently. C. Quarks always occur in groups with other quarks. D.

Peat is actually the early stage of

Explain how electric current is able to flow.

What is the angle between a rigid object and the force applied to it that yields torque using the equation T=Fd?

What is the difference between speed and velocity and give an example.