Explain how you would separate a mixture of water, sand, salt, and iron filings into its four component parts

Dams hold collected water back from flowing at their normal rate. What type of energy is in the collected water above the dam? chemical energy electrical energy potential energy kinetic energy

A force can be a push or a pull that, if unbalanced, can cause a change in an object's motion. a. true b. false

Which object possesses more gravitational potential energy: a 2-kilogram ball at 2.2 meters above the ground or a bullet that is. 15 kilograms at a height of 74 meters above the ground? Explain.

Find the magnitude of the force needed to accelerate a 220 g mass with a⃗ = - 0.205 m/s2 i^+0.400 m/s2 j^.

Analyze how buffers allow you to eat acidic and basic foods without changing your blood pH.

What is the mass in kg of a leopard in a tree if the tree branch is 36 m up and the leopard's gravitational potential energy is 29988 J?

Venus's average distance from the sun is 0.72 AU and Saturn's is 9.54 AU. Calculate the orbital velocity of Venus and Saturn around the sun. (The mass of the sun is 1.99 X 10^30 KG. an AU is 1.50 X 10^11 M.

Caleb's parent drove him to a swim meet 208 km away. It took them 2 hours, which included a 15-minute break to refuel. What was their average driving speed?

Why is thermal energy from the Sun transferred to Earth through electromagnetic waves instead of any other type of thermal energy transfer? Electromagnetic waves can carry energy through matter. Electromagnetic waves can travel through empty space.

Why do different elements emit different colors of light