A 30 W bulb is used for one hour. If it produces 56000 J of light energy, what is the bulb’s efficiency?

the answer is a. at the equator

as technology advances, new experiments often expose problems in accepted theories. c

hope i

-lavira: )

graphing motion: mastery test

209be

what is the instantaneous acceleration of

the particle at point b?

0 meters/second?

10 meters/second?

12 meters/second?

velocity imetersisecond

15 meters/second?

20

time (seconds)

answer: 0 meters/second^2

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.