Why is energy required to compress a spring?

A) the spring has chemical bonds

B) the spring is at room temperature

C) thé position of the spring is being changed

D) the spring is metal

5. The atmosphere is heated both by the Sun and by the Earth's surface. Water radiates heat differently than land, so the air temperature over the ocean is usually different than the air temperature over land.

Work is being done when a. You apply a force to an object. b. An object is moving after you apply force to it. c. You exert a force that moves an object in the direction of the force. d. You do something that is difficult.

An element has 50 protons nd 90 neutrons. will the nucleus breakdown? why or why not?

Which of the following changes would remove the source of energy that generates the convection which makes wind here on Earth?

Screw examples in daily life (simple machines)

You have a neutral balloon. What is its charge after 12000 electrons have been removed from it? The elemental charge is 1.6 * 10-19 C. Answer in units of µC.

Which formula can be used to find the x-component of the resultant vector?

How could the action force of a canoe moving through water be increased

Why does the value of your bond decrease when interest rates increase?

Your're sailing a boat from spain west to florida. which winds would you use?