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A Hydrogen atom exists in an excited state for typically around 10 nanoseconds. How many revolutions would Bohr's theory suggest that an electron would make in an n = 2 state before decaying?
question1a 55-kg gymnast hangs vertically from a pair of parallel rings.a if ropes supporting the rings are attached to
Submarines control their buoyancy using ballast tanks. To sink the tanks can be flooded with water and to rise compressed air can be fed into the tanks to expel the water, lowering the density of the sub.
Find out the sum of these four vector forces: 12N to the right at 35.0° above the horizontal, 31.0 N to the left at 51.5° above the horizontal, 7.45N to the left at 35.0° below the horizontal, and 24N to the right at 48.0° below the horizontal.
Physics - Speed and Direction, Driving along a crowded freeway, you notice that it takes a time t to go from one mile marker to the next.
An ideal gas is taken through a quasi-static process described by P = alphaV2, How much work is done on the expanding gas in this process
If the terminals of a battery are connected across two identical resistors in series, the total power delivered by the battery is 8.0 W. what is the total power delivered by the battery
A block with mass m = 21.5 kg slides down an inclined plane of slope angle 12.1o with a constant velocity. How far up the incline will the block move before coming to rest
A rigid rod of mass 3.50 kg and length of 1.50 m rotates in a vertical (x,y) plane about a frictionless pivot through its center. Determine the size of the angular acceleration of the system
what is the translational rms speed of carbon dioxide molecules.
The acceleration of gravity is 9.81 m/s2 . Assuming that air resistance is simply a constant 93 N force on the person during the fall, evaluate the person’s velocity just before hitting the net.
As a rocket passes the earth at 0.75c, it fires a laser perpendicular to its direction of travel, What is the speed of the laser beam relative to the earth
Coherent light with wavelength 600 nm passes through two very narrow slits and the interference pattern is observed on a screen 5.00 m from the slits. The first-order bright fringe is at 4.74 mm from the center of the central bright fringe. For what ..
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