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Question: A student in a parked car honks the horn, which has a `proper' frequency of 310 Hz. An observer in an approaching vehicle measures the frequency of the sound to be 333 Hz. Calculate the speed of the approaching vehicle. Use 340 m/s as the speed of sound in air.
After 35 minutes of running, at the 9km points in a 10km race, you find yourself 100 m behind the leader and moving at the same speed. what should your acceleration be if you are to catch up by the finish line? assume that the leader maintains a c..
A ball is thrown straight upward and returns to the thrower's hand after 2.50 s in the air. At what speed must the second ball be thrown
Consider electrons accelerated to a total energy of 20.0 GeV in the 3.00-km-long Stanford Liinear Accelerator. What is the factor ? for the electrons? What is the electrons' speed at the given energy?
A transformer connected to a 125 V (rms) ac line is to supply 12000 V (rms) for a neon sign. What current rating should the fuse in the primary circuit have
suppose that the steel gas tank in your car is completely filled when the temperature is 14deg c. how many gallons
A fugitive tries to hop on a freight train traveling at a constant speed of 4.8. What is the distance traveled to reach the box car
It is said that Galileo discovered a basic principle of the pendulum - that the period is independent of the amplitude, How long is the lamp chain?
q1. potassium iodide has an interplanar spacing of d 0.296 nm. a monochromatic x-ray beam shows first-order
Both spacecraft are initially at rest. Explain how far does the starship move as it pulls the shuttlecraft aboard?
Suppose a spaceship runs out of fuel near a star. The crew erects a square, white sail 7.06 km on a side, Find the temperature of the star's surface
a rigid closed insulated container with a volume of 45 ft3 is filled with carbon dioxide at a pressure of 14.7 psia and
If the laser light wavelength is 1062 (this corresponds to a Neodymium-YAG laser), how many wavelengths are found within the laser pulse
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