The energy needed to get a reaction started is the
a. adhesion energy.
b. activation energy.
c. cohesion energy.
d. chemical energy.

In a game of pool, ball a is moving with a velocity v0 of magnitude v0 = 15 ft/s when it strikes balls b and c, which are at rest and aligned as shown. knowing that after the collision the three balls move in the directions indicated and assuming frictionless surfaces and perfectly elastic impact (that is, conservation of energy), determine the magnitudes of the velocities va, vb, and vc.

Which of the following are found in plant cells buh not animal cells?

Which elements are not noble gases? check all that apply a.) neon b.) helium c.) lithium d.) calcium