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A certain type of laser emits light that has a frequency of 5.7 1014 Hz. The light, however, occurs as a series of short pulses, each lasting for a time of 2.5 10-11 s.
(a) How many wavelengths are there in one pulse?
(b) The light enters a pool of water. The frequency of the light remains the same, but the speed of the light slows down to 2.3 108 m/s. How many wavelengths are there now in one pulse?
A ball with mass 2.5 kg is moving in outer space with a velocity of 6.0 m/s horizontally, Find the final velocity of the pair
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A train moving with constant velocity travels 180 meters north in 14 seconds and an undetermined distance to the west. compute the direction of the train's motion relative to north
Calculate the ratio of the number of HBr molecules in state
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A 24 GeV proton in cosmic radiation moves in Earth's magnetic field B, with a velocity v perpendicular to B, What is the radius of the proton's curved path in that region
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While surveying a cave, a spelunker follows a passage 190{rm m} straight west, then 210{rm m} in a direction 45.0^circ east of south, and then 260{rm m} at 30.0^circ east of north. After a fourth unmeasured displacement, she finds herself back whe..
A microphone is attached to a spring that is suspended from the ceiling. Directly below on the floor is a stationary 412-hertz source of sound. determine the amplitude of the simple harmonic motion.
A circuit contains two elements, but it is not known if they are L, R or C. The current in this circuit when connected to a 137 V, What are the two elements
A circus clown weighing 175 pounds is fired from a cannon at 50 degrees above the horizontal. What was the initial velocity of the clown
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