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1. Jane waits on a railroad platform while two trains approach from the same direction at equal speeds of 11.90 m/s. Both trains are blowing their whistles (which have the same frequency), and one train is some distance behind the other. After the first train passes Jane but before the second train passes her, she hears beats of frequency 6.50 Hz. What is the frequency of the train whistles?
2. Two point sources are in phase and emit a 406 Hz tone. What is the phase difference at a point that is 2.0 m from one source and 9.0 m from the other? (Take the air temperature to be 20°C.) in rad?
The strongest person in the world lifted th read end of his car a mass of 615 kg a verticle distance of .24 meters. How much work did he do to life the car
An unstrained horizontal spring has a length of 0.36 m and a spring constant of 290 N/m. Two small charged objects are attached to this spring, one at each end. The charges on the objects have equal magnitudes. Because of these charges, the spring st..
The Ed-Scale defines the perfect temperature of a martini to be 8.0 degrees E and boling point of antifreese to bee 100 degrees E. Use this equation to find the freezing point of water in Eds
A car makes a round trip for 100m in 10 seconds. What is the average velocity?
An inductor (L = 400 mH), a capacitor (C = 5.30 μF), a resistor(R = 500 Ω) are connected in series. A 50.0 Hz AC generator connected in series to these elements producesa maximum current of 300 mA in the circuit.
A technician wraps wire around a tube of length 33 cm having a diameter of 7.9 cm. compute the self-inductance of this solenoid
from the top of a pole 4.8m about the ground, he was able to leave the pole with a speed of 4.82m/s at an angle of 7 degrees from vertical, find th total horizontal distance traveled for the vault
It is possible to turn right handed unit co-ordinate system into a left handed unit system by multiplying all three unit vectors by one scalar determine what is this scalars
A 7.50-nC charge is located 1.80m from a 4.20-nC charge, find the magnitude of the electrostatic force that one particle exerts on the other
An ideal gas expands isothermally, performing 4.1 x 103J of work in the process. Calculate the heat absorbed during this expansion
A 5 kg and a 3 kg box rest side by side on a smooth, level floor. What is the magnitude of the contact force between the blocks
An archer pulls her bowstring back 0.360 meter by exerting a force that increases uniformly from zero to 224 Newton. Compute how much work does the archer do in pulling the bow
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