With each bounce off the floor, a tennis ball loses 18% of its mechanical energy due to friction. when the ball is released from a height of 2.9 m above the floor, what height will it reach after the fourth bounce?

170 cm

130 mm

130 cm

13 cm

Imagine you work as a consultant, and your daily job involves listening to the constructive criticism of others. as part of your job, you must listen to opposing viewpoints to make important decisions. in this activity, you are a consulting dam engineer. you must make a decision about four different dams; should they be repaired, taken down, or left alone? you will listen to contrasting opinions about what should be done with the dams before you make the final decision. as the consulting dam engineer, what do you decide to do with this dam? explain your reasoning. by making your decision, did you support the opinions of the mayor and/or the dam safety official? why or why not? (site 1)

Which changes of state do the labels represent? a: b: c:

Which best represents the law of conservation of mass ?