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An Emergency Vehicle Siren is designed to emit an 8000 Hz sound. You hear a 9143 Hz tone as it approaches you at 40.0m/s and a 7273 Hz tone as it recedes at 32 m/s. What is the temperature of the air? (Assume sound speed is 331 + 0.60T) m/s where T is in degrees celsius
If the power output of a 630 kHz radio station is 50.0 kW, how many photons per second are produced
The rate of rotation of the smooth-walled tub is chosen so that a small piece of cloth will lose contact with the tub when the cloth is at an angle of ? = 73.0° above the horizontal. If the radius of the tub is r = 0.455 m, what rate of revolution..
A 1480{\rm kg} car pulls a 320{\rm kg} trailer. The car exerts a horizontal force of 3900{\rm N} against the ground in order to accelerate. What force does the car exert on the trailer
The polarizers are rotated, so that the second polarizer has a transmission of 43.6 degrees with respect to the first polarizer, find the intensity of the beam
A subway train has three cars, each weighing 1.20 x 10^5 N. The frictional force on each car is 103 N, and the first car, acting as an engine, exerts a horizontal force of 4.80 x 10^4 N on the rails.
A baseball player runs 27.4meters from batter's box to first base,overruns first base by 3.0 meters,and then returns to first base. Compared to the total distance traveled by the player,magnitude of the players total displacement from the batters ..
Using the idea of a dozen as an example again, if you have 2 dozen blocks and their total mass is 48 kg, What is the mass of a single molecule
A particle has a charge of +2.3 ?C and moves from point A to point B, a distance of 0.13 m. The particle experiences a constant electric force, and its motion is along the line of action of the force.
The angular velocity of a wheel is given by %uDBC0%uDF9D(t) = (2.00 rad/s2)t + (1.00 rad/s4)t3. What is the angular acceleration of the wheel as a function of time
A car starts from rest and accelerates at a constant rate of 3.00 m/s^2 until it is moving at 18.0 m/s. The car then decreases its acceleration to 0.500 m/s^2 and continues moving for an additional 250 m. Find the total time taken.
Please show steps: Hydraulic engineers in the United States often use, as a units of volume of water, What volume of water, in acre-feet, fell on the town
a distant quasar is found to be moving away from the earth at 0.8 c. a galaxy closer to the earth, What is the recessional speed of the quasar
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