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A 40.0 cm long organ pipe is filled with air at 0 degrees C and is open at both ends. The velocity of sound in air at 0 degrees C is 331 m/s. Another 40.0 cm long organ pipe is filled with air at 20 degrees C and is open at both ends. What is the beat frequency between the fundamental frequencies of the two organ pipes?
An astronomer on earth observes two galaxies moving away from each other along a line that passes through the earth. At what speed are the galaxies moving apart relative to each other?
A rocket blasts off from a platform on a space station. An identical rocket blast off from free space. Considering that everything else is equal, will the two rockets have the same acceleration? define.
After a day of testing race cars, you decide to take your own 1420 kg car onto the test track. While moving down the track at 10 m/s, you regularly accelerate to 32m/s in 10 s. What is the average net force that you have applied to car during the ..
Three forces in the x-y plane act on a 5.5 kg mass: 10.3 N directed at 37°, 12.2 N directed at 128 °, and 4.1 N directed at 201° . Calculate the direction of the resultant force
To make an order-of-magnitude estimate of the energy level spacings in the nucleus, Calculate the energy of the ground state
Consider two identical 25-micro-coulomb point charges, each of 18 mg mass. Let them initially be at rest, 80 cm apart. How fast (in m/s) will each charge be moving when the charges are very far apart
A transparent oil with index of refraction 1.15 spills on the surface of water (index of refraction 1.33), determine the thickness of the oil slick
A student of weight 665 N rides a steadily rotating Ferris wheel (the student sits upright). At the highest point, the magnitude of the normal force N on the student from seat is 566 N.
A golf ball is hit at ground level. The ball is observed to reach its maximum height above ground level 3.8 s after being hit, How high is the fence
Estimate the rms electric field in the sunlight that hits Saturn, knowing that the Earth receives about 1350 W/m2
A double speed trap is set up on a freeway. One police cruiser is hidden behind a billboard, and another is some distance away under a bridge. As a sedan passes by the first cruiser, its speed is measured to be 99.7 mph.
A 20.00 kg wood ball hangs from the 1.10 long wires. The maximum tension the wire can withstand without breaking is 600 N. A 0.710 kg projectile travelling horizontally hits and embeds itself in the wood ball. What is the largest speed this projectil..
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