What happens to a bar of metal when its heated?

Why will a block of iron float in mercury but sink in water?

Name the two components that make orbital motion, and explain why objects stay in orbit.

Discuss gravitational force and strong nuclear force. Describe at least two ways that they are alike and two ways that they are different.

How do whales bats and dolphins use echolocation? A To scare away predators B To attract mates C To orient them selves and find food D To tell animals of there species where they are

A large box is being pushed by three separate people. The first person is pushing the box at a rate of 6 m/s directly north. The second person is pushing the box at a rate of 6 m/s directly to the northeast.

A stunt car with a mass of 1000 kg crashes into a tree on a movie set during the collision acceleration of the car with 3 m what was the force of impact of the collision on the car

A circuit with a current of 400 amp has several lights that have a total resistance equal to 30 ohms. Find the voltage.

How many neutrons does element x have if it's atomic number is 35 and it's mass number 71

The potential difference between the terminal of an electrical heater is 60v when it draw a current 4A fron the source. What current will the heater draw if the potential difference is increased to 120v?

Which answer choice best explains why nuclear reactions release more energy than chemical reactions? Electrostatic forces of repulsion are thousands of times stronger than gravitational forces.