An ideal spring has a spring constant of 15 N/m and is displaced 4 m. What is the force required to displace the spring this far?

Ablock having mass m slides down an inclined plane. the force of friction between the block and the inclined plane is f, the block's weight is m g, and the normal force is n. (a) draw a free – body force diagram showing the forces acting on the block. (b) write down all relevant newton’s equations for a given situation.

What property of an object determines its inertia?

How do you know how many valence electrons an atom has?