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Though the particle in a box (infinite potential well) seems like a very unrealistic potential, it can actually be used to explain a bit about how humans see. The important light-absorbing molecule in human eyes is called retinal. Retinal consists of a chain of carbon atoms, roughly 1.5x10-9mlong. An electron in this long chain molecule behaves very much like a particle in a box.
Find the wavelength λn of the photon that must be absorbed by an electron to move it from the nth state of a box to the (n+1)th state. Assume that the box has length L and that the electron has mass m.
Light of wavelength 550. nm in air is found to travel at 1.96x10^8 m/s in a certain liquid. Determine the frequency of the light in air
The current in an electric hair dryer is 12A. How many electrons flow through the hair dryer in 5.2 min
A rotating wheel requires 5.0 second to complete 50 revolutions. Its angular speed at the end of the 5.0 second interval is 75 rad/s. Determine the constant acceleration of the wheel
A boy whirls a stone in a horizontal circle 1.6m above the ground,by means of a string 1.4m long. The angle between the stringand horizontal plane is 10 degrees. The string breaks, the stone flies horizontally, and strikes the ground 6m away. What..
A diver with a mass of 66.1 kilogram dives off a diving board 10.0 meter above the pool. When the diver launches himself he makes an angle of θ = 84.6 degree with the horizontal. Obtain the magnitude of the initial velocity of the diver
In a diesel engine, the piston compresses air at 309 K to a volume that is 0.0621 of the original volume and a pressure that is 48.3 times the original pressure. What is the temperature of the air after the compression? K
You make five measurements of a particular wavelength, and you find you have some random noise. Your measurements are 244, 251, 248, 248, 246 nm. What is the mean value for your five measurements
You have two capacitors: C1=410 nF and C2=260nF and a DC battery (Vbatt=9.00 volts). The two capacitors are connected to the battery in a series.
A student sits at rest on a piano stool that can rotate without friction. The moment of inertia of the student-stool system is 3.9 kg · m2. What is the resulting angular speed of the student and the stool
A flight attendant pulls her 74 N flight bag a distanceof 318 m along a levelairport floor at a constant velocity. Find the work done by the force of friction on the flight bag
The wing of an airplane has an average cross-sectional area of 13 m2 and experiences a lift force of 84,000 N. What is the average difference in the air pressure
A projectile is fired straight upward at 166m/s
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