You push a cart with mass 20 kg forward, giving it an acceleration of 2 m/s2. How much force did you apply?

From the deepest to the surface, what are the parts of the earth's interior? A) crust→mantle→core B) core→crust→mantle C) core→mantle→crust D) mantle→crust→core

A stone that starts at rest free falls for 7.0 s. How far does the stone fall in this time?

How many protons neutrons and electrons are in fluorine and in bromine

A rescue helicopter is hovering over a person whose boat has sunk. one of the rescuers throws a life preserver straight down to the victim with an initial velocity of 1.46 m/s and observes that is takes 1.8 s to reach the water.

When many atoms are split in a chain reaction, a large explosion occurs. This is an example of what type of energy conversion?: a.) thermal to mechanical b.) mechanical to chemical c.) radiant to nuclear d.) radiant to thermal

Which statement is correct about gasoline when it is burned? Heat energy is created by the gasoline. The total energy of the gasoline decreases. Chemical energy in the gasoline is destroyed. Chemical energy is transformed into heat energy.

The tilt of the Earth's axis of rotation changes over a period of 41,000 years. Which of these statements best predicts a long term effect of the changes in the tilt of the Earth's axis of rotation? a. The Earth's climate would change. b.

What do keratinized cells form?

Explain why Planck's introduction of quantization accounted for the properties of black-body radiation.

How and which waves travel either through a medium or a vacuum?