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John is listening to a horn. He knows the frequency of the horn is 516.402 Hz when both he and the horn are at rest. If John hears the horn's pitch at 549.402 Hz, which of the following are possible?
A) Both can be moving and have the same speed.
B) Both can be moving while having di?erent speeds.
C) John can be moving toward a stationary horn.
D) The distance between John and the horn is increasing with time.
E) Both can be moving in the same direction.
F) Both can be moving, but away from each other.
A 150 kg hoop rolls along a horizontal floor so that the hoop's center of mass has speed of 0.180 m/s. How much work must be done on the hoop to stop it.
Picture a wave with crests every 1.8m apart. If a crestpasses you every 2.6s, what is the propagation speed of the wave?
A transformer for an answering machine takes an ac voltage of amplitude170V as its input and supplies a8.4V amplitude to the answering machine. How many turns does the secondary have
Charge Q = 17E-8 C is placed in the origin. Location A is -3.00m from the charge while location B is 2.00m from the charge. A) Find the potential difference VB - VA between the two points. B) Which point is at the higher potential? Type either "Po..
A wheel 65 cm in diameter accelerates uniformly from 230 rpm to 355 rpm in 7s. How far will a point on the edge of the wheel have traveled in this time.
A 78.3?kg bungee jumper is enjoying an afternoon of jumps. The jumper's first oscillation has an amplitude of 10.3m and a period of 4.75s. find the spring constant of the bungee cord
A snowboarder starts from rest and glides down a hill that is 100m high. Assuming no friction, what is her speed at the bottom of the hill
A 30.0 kg solid uniform cube with 0.700 m sidesrests on a level surface. What is the minimum amount of work(Joules) necessary to put the cube into an unstable equilibrium position
Two water waves meet at the same point, one having a displacement above equilibrium of 60 cm, what is the resulting displacement above equilibrium
The 15g head of a bobble-head doll oscillates in SHM at a frequency of 4.0Hz. What is the head's time constant
Unpolarized light of intensity I0 is incident on three polarizing filters. The axis of the first is vertical, that of the second is 36° from vertical, What light intensity emerges from the third filter
an average-sized man is sitting in a big tanning room. the tanning radiation from the room walls is controlled by
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