A pole-vaulter first converts kinetic energy into

a.

thermal energy.

b.

chemical energy.

c.

mechanical energy.

d.

elastic potential energy.

The thermal energy of a container of helium gas is halved. what happens to the temperature in kelvin

Why are large astronomical bodies round

A firecracker is placed in the middle of a cluster of stationary billiard balls. The firecracker-billiard ball system sits on a frictionless surface. As the firecracker explodes, the balls scatter.

Is it possible for two different atoms of carbon to have different numbers of neutrons in their nuclei? Explain.

The spring constant, k, for a 22cm spring is 50N/m. A force is used to stretch the spring and when it is measured again it is 32cm long. Work out the size of this force. the

What is p in physics?

Often in Physics we will show a frame of reference as a

Which of these could be the dimensions of an object with a volume of 1 cm³? A. 1 cm * 1 cm * 1 cm B. 0.5 cm * 1 cm * 4 cm C. 10 cm * 1 cm * 10 cm D. 0.3 cm * 0.3 cm * 0.4 cm

If the wavelength of a yellow light is 580nm what is its frequency?

Which two stimuli did John B. Watson associate in his infamous "Little Albert" experiment? A. a white lab rat and the boy's mother B. fear and a loud noise C. a white lab rat and a loud noise D. fear and the boy's mother