Why doesn't water freeze from the bottom up?

What is light? 1. A wave of vibrating electric and magnetic energy 2. A wave that travels by compressions 3. A wave that travels by rarefractions 4. A state of matter

A ping-pong ball is shot straight north from a popgun at 4.0 m/s. The wind is blowing to the west at 3.0 m/s. What is the actual velocity of the ping-pong ball? 7.0 m/s 1.0 m/s

Why does a paper clip sink and a big ocean liner float? explain your answer.

How would you go about separating the components of a mixture of sand, gravel, salt and iron filings

Which scale measures the amount of damage after an earthquake?

Jose wandered 4 kilometers at 2 kilometers per hour. How long did Jose wander?

What is the acceleration of a 10kg pushed by a 5n force

A device that changes thermal energy into mechanical energy

You and your roommate are moving to a city 380 mimi away. Your roommate drives a rental truck at a constant 55 mi/hmi/h, and you drive your car at 65 mi/hmi/h. The two of you begin the trip at the same instant.

Which planet is 92,897,000 miles from the sun?