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Sound propagating during air at 30 degrees Celsius passes through a vertical cold front into air that is 4.0 degrees Celsius. if the sound has a frequency of 2400 Hz, by what percentage does its wavelength change in crossing the boundary?
Two identical point charges (q = +6.95 10-6 C) are fixed at diagonally opposite corners of a square with sides of length 0.485 m. A test charge (q0 = -2.15 10-8 C), Determine the speed of the test charge
Suppose you are riding a stationary exercise bicycle, and the electronic meter indicates that the wheel is rotating at 11.7 rad/s. how far would you have gone if the bike could move
The surface of the drum of a laser printer is negatively charged, except in certain "print black" regions, such as letterforms, thathave been discharged by a laser beam.
A standard 100 (120 ) lightbulb contains a 7.80 -long tungsten filament. The high-temperature resistivity of tungsten is. what is the resistance of a household
a muon formed high in teh earths atmosphere travels at speed v 0.990c for a distance of 4.60 km before it decays. a for
a small circular hole 9.00mm in diameter is cut in the side of a large water tank 24.0m below the water level in the
A student eats a candy bar that may give 1.8 * 10^6 joules of energy. if the student has a mass of 60 kg, how high will he have a climb a ladder to offset completely the energy contained in the candy bar.
A system of 1610 particles, each of which is either an electron or a proton, How many electrons are in this system
On a frictionless table, a glob of clay of mass 0.24 kg strikes a bar of mass 1.34kg perpendicularly at a point 0.38m from the center of the bar and sticks to it. If the bar is 1.14 m long and the clay is moving.
A man and a boy carry a canoe 5.80 m long and weighing 371 N. The canoe is held overhead in a horizontal position. How far from the opposite end should the man stand
If a scuba diver descends also quickly into the sea, the internal pressure on all eardrum remains at atmospheric pressure while the external pressure increases due to the increased water depth. At sufficient depths, the dissimilarity between the exte..
ccccthe Zambesi river in Africa rushes over Victoria Falls at a rate of 25 x 10^6 gallons per minute. The falls are 108 m high, 1 gallon equals 3.785 x 10^-3 m^3 (or 0.1337 cubic foot), and the water has a density of 1.00 x 10^3 kg/m3 (each cubic foo..
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