Is the formation of rust on an iron nail a chemical change or a physical change?

How does the digestive system interact with the circulatory system? A. Nutrients and gases are absorbed by organs in the circulatory system. Then, they are transported to all parts of the body by organs in the digestive system. B.

Find the force in newtons that does 0.0284 kilojoules of work in moving a book a distance of 4.00 meters

If Earth were twice as far from the sun, the force of gravity attracting the Earth to the Sun would be a. twice as strong b. half as strong c. one-quarter as strong.

A student attempts to slide a block down a smooth, dry ramp as shown, but the block does not move. The most likely explanation is that: a. the ramp is not steep enough for gravity to have any effect. b.

Which is a correct example of the principle of conservation of momentum? A) reversing of a car at a dead end B) conversion of radio waves to sound C) deforming of a balloon on being burst D) bouncing of a basketball off the board

4. How does an increase in orbital radius affect average orbital speed

What happens when a plastic lid sprinkled with iron filings is placed over a magnet?

A stuntman drives a car with a mass of 1500 kg on a drawbridge. The car accelerates with a constant force of 10,000 N. While he is driving, the drawbridge is raised to an incline of 30°.

In this channel of communication, messages are carried by sound and light waves. a. teleconference b. face-to-face c. voicemail d. hard copy memos

Cardiovascular exercise can