The school auditorium was being rebuilt. When the orchestra practiced during construction, the sound seemed to bounce all around the room. Before the concert, workers installed thick panels of light material with many holes. The sound was very different during the concert. Explain what happened to cause the change in sound.

Match each scenario to the form of energy it represents

The diagram shows a boulder rolling down a hill into a valley and then up the opposite hill. at which position does the boulder have the greatest kinetic energy? a b c d

Aswimming pool whose volume is 10 comma 000 gal contains water that is 0.01% chlorine. starting at tequals0, city water containing 0.003% chlorine is pumped into the pool at a rate of 5 gal/min. the pool water flows out at the same rate. what is the percentage of chlorine in the pool after 1 hour? when will the pool water be 0.006% chlorine?