A stunt woman plans to launch herself from a cannon and land in a net. The cannon can launch her at a speed of 16.1 m/s. The net is 25 m away, at the same elevation as the cannon. At what angle (relative to horizontal) should the cannon be aimed so the stunt woman lands safely

5g of ammonium nitrate was dissolved in 60g of water in an insulated container. the temperature at the start of the reaction was 23.0°c and at the end it was 19.0°c. calculate the energy absorbed by the reaction.

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?

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.