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A train is moving parallel and adjacent to a highway with a constant speed of 25 m/s. A car, at time t0, is 42 m behind the train, travelling in the similar direction as the train at 49 m/s, and accelerating at 4 m/s^2. The train's whistle blows at a frequency of 460Hz. The speed of sound in air is 343 m/s. At the moment t0, the car's driver hears a whistle from the train.
What frequency does the car's driver hear?
Part B. @ a time t, after the car has passed the train and is a distance 32 m ahead of the train, the whistle blows again. What frequency does the driver hear?
the altitude of a hang glider is increasing at a rate of 6.80 m/s. At the same time, Find the magnitude of the glider's velocity
Some pacemakers employ magnetic reed switches to enable doctors to change their mode of operation without surgery. What current must a wire carry if it is to produce a 5.02E-4 T field at a distance of 0.468 m
A particle of mass 7.7 × 10-8 kg and charge +8.0 ?C is traveling due east. It enters perpendicularly a magnetic field whose magnitude is 3.2 T, How much time does the particle spend in the magnetic field
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A certain resistor has a resistance of 1.484 ohms at 20.0 degrees celsius and a resistance of 1.512 ohms at 34.0 degrees celsius. What is its temperature of resistivity
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Two thin, isolated, concentric conducting spheres of radii 5.10 cm and 14.40 cm, have net charges of 23.00 nC, What is the electric potential at 3.315 cm from the center of the spheres
A person scuffing her feet on a wool rug on a dry day accumulates a net charge of -89\mu C. How many excess electrons does she get
an 80 kg person in outer space is at rest when he catches a 10 kg asteroid moving at 15ms. what is the final velocity
Three people are carrying a horizontal ladder 4.00m long. One of them holds the front end of the ladder, and the other two hold opposite sides of the ladder the similar distance from its far end. What is the distance of the latter two people from t..
Which pulls harder gravitationally, the Earth on the Moon, or the Moon on the Earth? Which accelerates more? Explain your answers in terms of relevant principles of physics.
Particles pass through a single slit of width 0.233 mm. The de Broglie wavelength of each particle is 558 nm. Use the Heisenberg uncertainty principle to determine the maximum angle in that range
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