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A physics professor demonstrates the Doppler effect by tying a 550 Hz sound generator to a 1.0-m-long rope and whirling it around her head in a horizontal circle at 120 rpm. Assume the room temperature is 20°C. A) What is the highest frequency heard by a student in the classroom? (in Hz) B) What is the lowest frequency heard by a student in the classroom? (in Hz)
A bucket filled with water has a mass of 37 kg and is hanging froma rope that is wound around a stationary cylinder of radius .042m.if the cylinder does not rotate and the bucket hangs straight down,what is the magnitude of the torque produced by ..
A copper pipe with an outer radius of 0.016 m runs from an outdoor wall faucet into the interior of a house. The temperature of the faucet is 2.1°C, Find the inner radius of the pipe
The yellow light from a helium discharge tube has a wavelength of 587.5 nm. calculate the number of lines per centimeter on the grating
Two spectators at a soccer game in Montjuic Stadium see, and a moment later hear, the ball being kicked on the playing field. How far is each spectator from the player
A 5.0 kg bundle starts up a 30° incline with 128 J of kinetic energy. How far will it slide up the plane if the coefficient of friction is 0.40
If the magnitude of vector A is 10.0 m and that of vector B is 12.5 m, what is the range of values allowed for the magnitude of the sum of A and B?
A rope is used to pull a block a horizontal distance of 50 metres. If the rope tension is 120 N, What is the work done on the box
A turn-table is spinning down due to friction in the bearings. It takes 60 seconds for the turn-table to stop from an initial speed of 2. 5 s?1 and that the magnitude of the initial angular acceleration was 0.10s?2. compute the number of rotations ..
A 11 kg box must be slid across the floor. what is the minimum force needed to start the box moving from rest
A 202 kg cart runs into the rear end of a 103 kg cart that is stationary. what is the speed of the cart before collision
Two equally charged particles, held 4.7 × 10-3 m apart, are released from rest. The initial acceleration of the first particle is observed to be 7.2 m/s2, find the mass of the second particle
Consider an incompressible fluid inside a closed verticalcylinder. The applied pressure at top of the fluid is 2.02 x10 to the fifth N/m squared, Calculate the pressure at the bottom of the cylinder
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