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A whistle of frequency 527 Hz moves in a circle of radius 60.3 cm at an angular speed of 12.3 rad/s. What are (a) the lowest and (b) the highest frequencies heard by a listener a long distance away, at rest with respect to the center of the circle? (Take the speed of sound in air to be 343 m/s.)
A woman walks 305 m in the direction 58° east of north, then 164 m directly east. Find the distance she walks
A rigid tank contains mixture of liquid and vapor. The mixture is 12.3% quality at 100°C. The tank is 10L. The tank is then heated. Calculate the heat transfer required for the end temperature reaches 150°C.
35MW of power at 45kV (rms) arrives at a town from a generator via 3.4? transmission lines. Calculate the fraction of the power generated that is wasted in the lines
An engine has a hot reservoir temperature of 969 K and a cold reservoir temperature of 602 K. The engine operates at two-fifths maximum efficiency. What is the efficiency of the engine?
at the familab accelerator in batavia illinois protons having momentum 5.00x 10-16 kg.ms are held in a circular orbit
A crate of mass 45.0 kg is being transported on the flatbed of a pickup truck. What is the acceleration of the crate relative to the ground
A dipole consists of charges +eand -eseparated by0.76nm. It is in an electric fieldE=2.4× 104N/C. What is the torque on the dipole when it is perpendicular to the field
Suppose that the air bubble is always in thermal equilibrium with the surrounding water.
Two identical point charges are fixed to diagonally opposite corners of a square that is 0.495 m on a side. How much work is done by the electric force as one of the charges moves to an empty corner
the earth has an angular speed of 7.272nbsp 10-5 rads in its rotation. find the new angular speed if an asteroid m
A railroad car of mass 3.0 104 kg moving at 4.00 m/s collides and couples with two coupled railroad cars, What is the speed of the three coupled cars after the collision
Bob Richards is production manager of Zychol Chemicals, in Houston Texas, is making his quarterly report, which is to include a productivity examine for his section.
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