Before the cells in a person's body can use the food that the person eats, the food must be A. chemically broken down into sugar. B. chemically changed into heat. C. physically changed into a solid. D. physically heated to 100°C.

White light strikes a prism on one side while individual colors of light travel out of the prism on its other side. This Demonstrates that A. each color of light is made up of white light B.

Tim is experimenting with salts dissolving in water. He thinks that all salts will become more soluble as the temperature increases.

Approximately how far is the sun from the center of the milky way galaxy?

Why do you think baseball in referred as "America's past time" A) because it's enormous popularity as a spectator sport B) because the founding fathers liked to play C) Becouse Americans would rather play baseball then work D) none of the above

What is the direction of friction if a ball is rolling on the ground?

A world-class sprinter can burst out of the blocks to essentially top speed (of about 11.5 m/s) in the first 15.0 m of the race. what is the average acceleration of this sprinter, and how long does it take her to reach that speed?

How are primary and secondary succession similar and how are they different?

What relates the net force exerted on an object to its mass and acceleration?

I'm a wave, the medium moves parallel to the direction that the wave travels

What is the wavelength of a wave that has a velocity of 32 m/s and a frequency of 60.6 Hz?