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A diver shines a flashlight upward from beneath the water ata 38.0^\circ angle to the vertical. At what angle does the light leave the water?
If the mass of the diver is 84 kg and the board is 1.5 m long, illustrate what is the magnitude of the torque due to gravity on the diving board with a pivot point at the fixed end of the board?
The frequency doubled output of a Nd3+ YAG laser has a wavelength of 532nm. If each pulse of light has a total energy of 0.550J and the repetition rate of the laser is 30Hz, how many photons does the laser emit at 532nm in 3 minutes?
A 1 530-kg automobile has a wheel base (the distance between the axles) of 2.70 m. Find the force exerted by the ground on each wheel
two forces f1 and f2 are acting on a mass m6.0 kg. the force f1 5.0i 7.0j 2.0k in n. the acceleration of the mass is
Five grams of nitorgen gas at an initial pressure of3.0atm and at a 20 degrees celcius undergo an iobaric expansionuntil the volume has tribled. What is the gas volume after the expansion?
A 200 MW laser pulse is focused with a lens to a diameter of2.0μm. find the laser beam's electric field amplitude at the focal point
a proton starts from rest and is accelerated through a potential difference of 2100 v. the proton then leaves the
A 12 kg weather rocket generates a thrust of 250 N. The rocket, pointing upward, is clamped to the top of a vertical spring. The bottom of the spring, whose spring constant is 560 N/m, is anchored to the ground. What is the rocket's speed while the s..
A girl is whirling a ball on a string around her head in ahorizontal plane. She wants to let go at precisely the right timeso that the ball will hit a target on the other side of the yard. When should she let go of the string
During a long airport layover, a physicist father and his 8-year-old daughter try a game that involves a moving walkway. With what speed was the girl walking
Water at 25 degrees celius is pumped from 100kPa to 5MPa in a pump with an efficiency of 75%, Calulate the temperature rise in the real pump
Jane looking for tarzan, is running at top speed (5.7m/s) and grabs a vine hanginf vertically from a tall tree in the jungle. How high can she swing upward
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