A 1.20 g sample of an unknown has a volume of 1.73 cm what is the density of the unknown

Which is true of pluto? a. pluto revolves around the sun but does not rotate. b. pluto does not revolve around the sun. c. pluto is not always the planet farthest from the sun. d. pluto's orbit is almost perfectly round.

The world record for the hundred meter dash is 9.77 s. what is the corresponding average speed in units of m/s, km/h, ft/s, and mi/h?

Is the study of the muscle movements in the human body an example of biology or of physics

A 30-g bullet is fired with a horizontal velocity of 450 m/s and becomes embedded in block B, which has a mass of 3 kg. After the impact, block B slides on 30-kg carrier C until it impacts the end of the carrier.

Healthy blood vessels do what more easily? open close or move

A lizard accelerates from 2 m/s to 10 m/s in 4 seconds. what is the lizard average acceleration

Explain the difference between balanced forces and action and reaction forces.

Describe and apply Newton's Three Laws

If you do 1000j of work on a system and remove 500j of heat from it, what is the change in its internal energy

Two children stretch a jump rope between them and send wave pulses back and forth on it. The rope is 4.5 m long, its mass is 0.42 kg, and the force exerted on it by the children is 71 N.