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A standing wave has been created on a string of length 1.5m. The frequency of the wave is 25Hz. The ends of the string are nodal points and there are 3 antinodes. If the maximum amplitude of the wave is 5cm, write complete expressions, including values for k and ?, for the generated wave traveling to the right and the reflected wave traveling left. Take right as the + xˆ direction.
The proper length of one spaceship is 2.8 times that of another. The two spaceships are travelling in the same direction and, while both are passing overhead, an Earth observer measures the two spaceships to be the same length.
observations of a certain galaxy show that stars at a distance of 16 pc from the center of the galaxy orbit a central
An AC power generator produces51A (rms) at 3600 V. The voltage is stepped up to 100000 V by an ideal transformer, What percentage of the power delivered by the generator
A sprinter explodes out of the starting block with an acceleration of +3.9 m/s2, What is her velocity at the end of the race
A parallel-plate capacitor with circular plates of radius R is being charged. What is the radius R for the circular plate
Two point charges, +3.18 µC and -5.50 µC, are separated by 1.22 m. What is the electric potential midway between them
q1. if air drag is negligibly small how fast is sequoia cone moving while it reaches the ground if it dropped from the
A skier starts down a 26 slope. After a vertical drop of 28 m, the slope temporarily levels out and then drops at 19 an additional 39 m vertically before leveling out again. What is the skier's speed on the lower level stretch
Julie drives 100 mi to Grandmother's house. On the way to Grandmother's, Julie drives half the distance at 44.0mph and half the distance at 65.0. What is her average speed on the return trip
A student holds a tuning fork oscillating at 201 hz. He walks towards a wall at a constant speed of 1.38 m/s. What beat frequency does he observe between the tuning fork and its echo
An automatic weapon can fire 68 bullets per minute at V = 290 m/s. If each bullet has a mass M = 40 g, what is the average force in N on the shoulder
A near-sighted person might correct his vision by wearing diverging lenses with focal length f = -45cm, Use ray tracing to determine the location of the image
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