What is the si unit for pressure?

What is light rays?

In a compression wave, particles in the medium move a. perpendicular to the direction of the wave c. in the same direction as the wave b. opposite of the direction of the wave d. in depends upon state of the medium

Gold has 118 neutrons. If a gold atom were to lose a neutron, what would happen? A) It's mass stays the same, and it becomes platinum B) It's mass is lowered, and it becomes mercury C) It's mass is lowered, but it is still gold D) It's mass stays

Acceleration of an 82 kg couch that is pushed across the floor with an unbalanced force of 21N

The momentum of an isolated system is conserved A) only in inelastic collisions. B) only in elastic collisions. C) in both elastic and inelastic collisions

The gamma ray released by each decay carries 140kev of energy. find the total energy e released by decays in the 2 hours.

Think of the last five things you read. Now think of a type of reading you havent done recenty have never read. What kind of pattern do you see in your reading? What is your favorite type of reading and your least favorite type of reading?

Consider this statement: Air is matter. Which facts best support the statement? A. Balloons can be filled with air. B. Air is essential for life to exist. C. Air has mass. D. Air is not an element. E. To float on air is to be happy. F.

Hydroelectric power uses: wind water coal the sun

Two lightweight metal spheres are suspended near each other from insulating threads. One sphere has a net charge; the other sphere has no net charge. The spheres will: A. Attract each other B. Exert no electrostatic force on each other C.