Mineral is commonly used as an abrasive?

Airaplanes sometimes at the same altitude at which jet streams blow how would a jet stream affect a plane flying from New York to Los Angeles? Explain.

What process is used when the sun transfers light to plants A. conduction B. radiation C. convection D. all of these

Which of these is not an example of a physical change? a. a nail rusting b. a rock cracking c. blowing up a balloon d. stretching a piece of clay

A ball is thrown straight up at an initial speed of 9.8m/s and, on returning to your hand, hits it moving downward at the same speed. If the whole trip took 2.0s, determine the ball's (a) average acceleration and (b) average velocity.

What is the ability to complete extended periods of physical activity?

I'm Always in front of you. but you never see me. what am i?

An alternative to CFL bulbs and incandescent bulbs are light-emitting diode (LED) bulbs. A 60 W incandescent bulb can be replaced by a 12 W LED bulb. Both produce 800 lumens of light. Assuming the cost of electricity is $0.

Energy is the ability to A. do work. B. exert force. C. transfer heat. D. create or destroy matter.

what is the force of static friction on Earth between a 2000 kg car and the road if a coefficient of static friction is 0.4?

Why does nobody like me?