Newton's first law of motion is also known as the law of

a. inertia

b. radiation

c. attraction

d. perpetual montion

The mechanical engery of an object equals its

4. Which model best describes the particles of a solid and their motion? O bricks cemented together in a wall O beads moving around in a rattle O people seated in an auditorium O students walking through a crowded hall

Two sacks contain the same number of identical apples and are separated by a distance r. The two sacks exert a gravitational force on each other that is opposite in direction but with the same magnitude, F.

The amount of energy needed to raise the temperature of a sample 1°C is called a. Heat capacity b. Specific heat capacity c. Calorie

Two pulleys, one with radius 2 inches and one with radius 9 inches , are connected by a belt. If the 2-inch pulley is caused to rotate at 5 revolutions per minute , determine the revolutions per minute of the 9 dash inch pulley.

A British newspaper was interested in whether groups of people who differed in social standing were treated differently when they complained to organizations about poor service they had received.

During combustion, a fuel's electromagnetic energy is converted into thermal energy.

Explain why glucose is important to a cell

4. How far does a car travel in 90 seconds if it is traveling at a speed of 55 m/s?

Total energy input is 1400 and my efficiency is 80% so what is the useful energy output in jules?