Read the questions carefully and write your answer in a separate sheet of paper.
1. Differentiate pitch intensity and loudness.
2.How is pitch and wavelength of soundwave related to each other?
3.How loudness differs with the persons
4.As an ambulance approaches and passes you, how can you explain the sound it produced
5. Suggest ways on how to protect human ear from noise pollution.

To practice problem-solving strategy 10.1 for energy conservation problems. a sled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slides a distance d1 down the slope and then covers the distance d2 along the horizontal terrain before stopping. find the coefficient of kinetic friction μk between the sled and the ground, assuming that it is constant throughout the trip.