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Two cars, both at 65.0 mph, approach each other in the opposite directions with their horns on, producing identical tones of frequency 414 Hz. Assuming that the speed of sound in the air is 343 m/s, what is the beat frequency heard with the drivers?
Suppose that water waves coming into a dock have a velocity of 1.7 m/s and a wavelength of 2.6 m. With what frequency do these waves meet the dock
A child in a boat throws a 6.40kg package out horizontally with a speed of 10.0 m/s. determine the total work performed by the child
An astronaut has a heart rate of 65 beats/min as measured with monitor on the spaceship. What will the heart rate be as measured with an earth observer when the astronaut’s spaceship goes by the earth at a speed of 0.60 c?
When responding to sound, the human eardrum vibrates about its equilibrium position. Find the maximum acceleration of the eardrum
A groove on a monophonic phonograph record wigges laterally such tht its amplitude and frequency more or less ocresspond to the sound that is recorded. If at a given moment the needles is moving through the groove at 0.50 m/s, what would be the wiggl..
A solenoid that is 93.2 cm long has a radius of 2.71 cm and a winding of 1150 turns; Calculate the magnitude of the magnetic field inside the solenoid
a slingshot fires a pebble from the top of a building at a speed of 15.0 ms. the building is 30.0 m tall. ignoring air
Expalin by how much does the potential energy of a 18.0-kg child increase when the child climbs a normal staircase to the second floor?
A rectangular block of copper has sides of length 12 cm, 22 cm, and45 cm. what are the currents thatthe block can carry
An optometrist prescribes contact lenses that have a focal length of 50.0cm. (a) Are the lenses converging or diverging? (b) Is the person who wears them near-sighted or far-sighted?
Two point charges, Q1 = -7 and Q2 = 2 are located between two oppositely charged parallel plates. The two charges are separated by a distance of x = 0.33m. Assume that the electric field produced by the charged plates is uniform and equal to E = 6..
A block (m = 3 kg) is sitting on a horizontal frictionless table. A spring (k = 500 N/m) is mounted at the side of this block so that when the block is used to compress the spring, with what velocity does it slide across the table
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