Which is true according to the law of conservation of energy?

A. in a closed system, the total amount of energy in the universe keeps on changing

B. The supply of energy is limited, so it is essential to conserve it.

C. in a closed system, energy can be created and destroyed,

D. in a closed system, energy cannot be used faster than it is created,

E. in a closed system, the total energy always remains constant,

Aknife blade is a(n) a. lever b. screw c. wedge d. inclined plane

Disney, viacom and aol time warner are examples of

Click the game tab at the bottom of the simulation and select level 1. (there is no seesaw balance for this part of the activity.) balance the first equation, and click check to see if you got it right. if you can’t balance it in the first try, you can try again. work through the five equations for level 1. click continue to go on to level 2, and later level 3. each level is more difficult than the one before. keep trying until all the equations are balanced. in one or two sentences, describe how you did in the balancing game. in a few more sentences, explain one strategy you learned for balancing more complex equations.