When a firecracker explodes, stored chemical energy turns into sound and light energy. What is another type of energy also released during this transformation? * A) Thermal
B) Nuclear
C) Electrical
D) Sound

Arowboat passenger uses an oar to push the boat off the dock by exerting a force of 40n for 3.0s. what impulse acts on the boat.

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.

The three classes of rocks are sedimentary, metamorphic, and igneous. how are rocks classified into one of these three groups?