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a) A high speed train is traveling at a speed of 48 m/s when the engineer sounds the 411 Hz warning horn. The speed of sound is 340m/s. What is the frequency of the sound as perceived with a person standing on at the crossing when the train is approaching?
b) What is the wavelength of the sound because perceived by a person standing on at the crossing when the train is approaching?
c) What is the wavelength of the sound as perceived by a person standing on at the crossing when the train is leaving?
d) What is the frequency of the sound as perceived by a person standing on at the crossing when the train is leaving?
The position of a particle is given by the expression x = (3.00 m) cos(4.00?t + ?/4), where x is in meters and t is in seconds. Determine the frequency and period of the motion
a pendulum has a length of 0.3 meter and the acceleration of gravity is 9.8 ms squared. use the formula t 2p vlg to
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how much will the leg compress for the thing of the same fantastic four fame if you assume that he is made of granite
A computer monitor accelerates electrons and directs them to thescreen in order to create an image. If the acceleratingplates are 1.05 cm apart, and have a potential differenceof 2.00×104 V, find the change in electricpotential energy for any elect..
A 1.0 m long rod has a density explained by λ =a + bx, where λ is the density in kilograms per meter of length, a = 2.0 kg/m, b =5.0 kg/m2, and x is the distance in meters from the left end of the rod. The rod rests horizontally with its end search s..
A capacitor with air between its plates is charged to 140 V and then disconnected from the battery. Whena piece of glass is placed between the plates, the voltage acrossthe capacitor drops to 30 V. What is the dielectric constant of the glass?
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A mountain climber gains 897 m in elevation on a particular hike. Consider the climber's body as a heat engine, how much heat does the food supply
A child of mass 15 kg is sitting on a sled while hisbrother pulls it up a snowy hill at steady speed. Find the tension in the rope
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