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In one of the original Doppler experiments, a tuba was played at a frequency of 92.0Hz on a moving flat train car, and a second identical tuba played the same tone while at rest in the railway station.
Part A What beat frequency was heard in the station if the train car approached the station at a speed of 7.00m/s?
A -6.0 diopter lens is held 10.0 cm from an ant that is 1.0mm high. What is the height of the image
An 18 g rifle bullet traveling 210 m/s buries itself in a 3.9kg pendulum hanging on a 2.6 m long string, which makes the pendulum swing upward in an arc. find the vertical and horizontal components of the pendulum's displacement.
A uniform disk of mass 7.00m and radius 7.00r can rotate freely about its fixed center like a merry-go-round, What is the ratio K/K0 of the new kinetic energy of the two-disk system to the system's initial kinetic energy
Mary runs off a diving board with a velocity of 1.7 m/s in the horizontal direction. If the water surface is 2 meters below the board: A. how long will it take for her to hit the water B. where will she hit the water C. With what velocity will she..
A ladder 5.6 m long leans against a wall inside a spaceship. From the point of view of a person on the ship, Find the angle the ladder makes with the floor
A man in a maze makes three consecutive displacements. His first displacement is 6.40 m westward, Find the magnitude and direction of his third displacement
The loaded cab of an elevator has a mass of 3.0 x10^3 kg and moves 171 m up the shaft in 23s at constant speed. At what average rate does the force from the cable do work on the cab.
Two children, with masses 35kg (on the left) and 44kg (on the right), sit at opposite ends of a 3.9mlong seesaw with mass 22kg, With the seesaw horizontal, find the net torque on the seesaw
The moment the other student passes you, you start accelerating at 2.67 m/s2, After what distance will you catch up with your classmate
For a common emitter amplifer, current gain is 70. If the emitter current is 8.8mA, Calculate the collector and base current. Also calculate current gain
Illustrate what is the time it takes for the bullet to hit the ground, how far down range does the bullet travel, and what is the resultant velocity (in m/s) and final angle?
assume the coefficient of kinetic friction between m_{rm A} and the plane in the figure is mu_k = 0.15, and that m_{rm{A}} = m_{rm{B}} = 2.7{rm{ kg}}. What smallest value of mu _{rm{k}} will keep the system from accelerating.
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