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You use a vice to firmly clamp one end of a hacksaw blade. You twang the free end and it vibrates. If you do the same, but first place a wad of clay on the free end, how, if at all, will the frequency of vibration differ? Would it make a difference if the wad of clay were stuck to the middle? Explain.
A 54.0-g Super Ball traveling at 29.0 m/s bounces off a brick wall and rebounds at 18.0 m/s. What is the magnitude of the average acceleration of the ball
The 210 A current through a spark plug moves 0.270 mC of charge. How long does the spark last
Two blocks with masses M1 and M2 are released from the top of twofrictionless inclined planes of the same height making 30 and 60degree angles with the horizontal direction, respectively. Which of the blocks is going faster
For the Betz limit, what is the ratio of flow areas for the stream tube encompassing the rotor at the rotor plane upstream and downstream?
Communications satellites are placed in a circular orbit where they stay directly over a fixed point on the equator as the earth rotates. find the speed of a satellite in geosynchronous orbit
three resistors of 75, 50 , 100 ohms are connected to a 9 volt source. determine the power dissipated by the circuit
in a city with an air-pollution problem a bus has no combustion engine. it runs on energy drawn from a large rapidly
Lasers are used extensively in eye surgery to remove unwanted material from the eye or reshape the eye lens. If this energy is delivered to a spot on the eye that is 1.0 mm in diameter, what is the intensity during a pulse
Only radiation with wavelengths smaller than 0.2424um is capable of dissociating molecular oxygen into atomic oxygen, according to the reaction: O2 + photon
water flows steadily through a horizontal pipe at the nozzle inlet the diameter is 6 in. at the nozzle outlet where the
A fortune-teller looks into a silver-surfaced crystal ball with a radius of 10.0 cm and focal length of -5.0 cm. If her eye is 28 cm from the ball, where is the image of her eye? Determine the distance from the image to the surface of the ball. Expr..
A balloon is filled with 5.00 liters of helium at a pressure of 1.20 atm and a temperature of 27.0 degrees C. Find the mass of the helium
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