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Two automobiles are equipped with the same single-frequency horn.When one is at rest and the other is moving toward an observer at15.6 m/s, a beat frequency of 5.52 Hz is heard. What is thefrequency the horns emit? Assume T = 20°C .
a mass M is hanging from two strings. There is a tension of 34 N in the string on the left and a tension of 24 N in the string on the right. How heavy is the object
A person with mass m1 = 59.0 kg stands at the left end of a uniform beam with mass m2 = 93.0 kg and a length L = 2.9 m. Another person with mass m3 = 68.0 kg stands on the far right end of the beam and holds a medicine ball with mass m4 = 13.0 kg
A train is travelling up a 5 degree incline at a speed of 2.2 m/s while the last car breaks free and begins to coast without friction. a) How long does it take for the last car to come to rest momentarily? b) How far did last car travel before mom..
q1. assume that when you ride on your 7.60-kg bike the weight of you and the bike is supported equally by the two
A capacitor with initial charge q0 isdischarged through a resistor. What multiple of the time constantτ gives the time the capacitor takes to lose(a) the first 1/5-th of its charge
charge of 5.00 x 10-9 c and a charge of -4.00 x 10-9 c are separated by a distance of 60.0 cm. find the position at
A car is traveling at 25 m/s when it runs off the road and hits a utility pole. What is the acceleration of the airbag
q1. a father m 92 kg and son m 44 kg are standing facing each other on a frozen pond. the son pushes on the father
First discuss how energy can be converted from one form to another, giving specific examples. Define what we mean
two nanowires are separated by 1.2 nm as measured by stm. inside the wires the potential energy is zero but between the
two violinists are playing two different tones. the first violinist plays a tone that has a frequency of 100 hz. you
Consider two concentric thin wall steel tubes, the larger one closed at the bottom and the inner one open. What must be the relationship between the radii of the tubes
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