All the forces within a closed system are

a) internal

b) external

c) due to gravity

d) angular

A 2-KG sample of metal increases in temperature by 20 C when heated on a stove for 3 minutes. Can you predict what will happen to the temperature rise of 4 kg sample of the same material when heat on the same stove for 6 minutes

Which of the following best characterizes the body type of a person who is large with shorter limbs and muscles, and is an excellent long distance swimmer? A. ectomorph B. endomorph C. mesomorph D. polymorph

wooden floor at a constant speed of 1.0 m/s. The coefficient of kinetic friction is 0.15. Now you double the force on the box. How long would it take for the velocity of the crate to double to 2.0 m/s?

Does a wave with the high-pitched have a very low frequency

He cans have essentially the same size, shape, and mass. which can has more energy at the bottom of the ramp? ignore friction and air resistance. the cans have essentially the same size, shape, and mass.

A force is applied to a 13.0 kg wagon to pull it down the sidewalk at a constant speed. The coefficient of kinetic friction is 0.65. Considering the resulting frictional force, what is the magnitude of the applied force?

Gravity is the force by which a planet or other body draws objects toward its center. The force of gravity keeps all of the planers in orbit around the Sun.

What wave-like property of light causes it to bend when encountering an opening? A. Reflection B. all the above c. Refraction d. none of the above e. diffraction

Which of the following statements describe sliding friction? Select all that apply. 1.) a force that causes an object to increase speed 2.) a force in which one of the objects involved must be a liquid or a gas 3.

What do a broken rode and a volcano eruption have in common