Which eon of the geological time scale means " visiblr life "

A. phanerzoic

B. proterozoic

C. hadean

D. archean

A ball is thrown straight up it passes a 2.00 m high window 7.5 meters off the ground on its path up it takes 1.3 s to go past the window. what was the balls initial velocity?

Record breaking low temperatures are associated with which air mass?

What are some examples of heterogeneous and homogeneous mixtures?

Because of interstellar dust, astronomers can see at most about 5 kpc into the disk of the galaxy at visual wavelengths.

Using a cathode ray tube, Thomson confirmed that

If the number of particles is increased in a balloon what happens to the pressure inside of it?

Nicotine a. is a central nervous system depressant. b. stimulates the heart and increases respiration. c. increases hunger signals. d. is not easy to develop a tolerance to.

When a charged cloud passes overhead, the goround below is charged by A deduction B electrification C polarization D induction

What happens during constructive interference? two waves moving through the same medium add their effects one wave prevents another from moving through the same medium two waves produce two more waves waves moving in opposite directions cancel each

The weight of an object is a. the force of gravity on its mass. b. the amount of matter in an object. c. the tendency of an object to resist motion. d. the tendency of an object to continue moving in a straight line.