Look at the two wave diagrams,
which best describes the difference between wave a and
wave b?
wave a
u
w
density of air
wave a
n
wave a has a greater intensity and transfers more
energy
wave b has a greater intensity and transfers more
energy
wave a transfers more energy, but wave b has a greater
intensity
wave b transfers more energy, but wave a has a greater
intensity
time
wave b
density of air
time
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Asled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slidesa distance d1 down the slope and then covers the distance d2 alongthe horizontal terrain before stopping. find the coefficient ofkinetic friction μk between the sled and the ground, assumingthat it is constant throughout the trip. find the coefficient of kinetic frictionμk. express your answer in terms of someor all of the variables d1, d2, and θ.