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A ray of light travels across a liquid-to-glass interface. If the indices of refraction for the liquid and glass are, respectively, 1.57 and 1.68, what is the critical angle at this interface?
You have a thermodynamic system with three states. You observe the probabilities p1 = 0.9, p2 = 0.09, p3 = 0.01 at T = 300K. What are the energies "2 and "3 of states 2 and 3 relative to the ground state?
An iron wire has a cross-sectional area equal to 1.45 10-5 m2. find the drift speed of conduction electrons in this wire
question1two window washers bob and joe are on a 3.00 m long 380 n scaffold supported by two cables attached to its
Determine the moment of inertia for three children weighing 64.0 lb, 43.0 lb and 83 lb sitting at different points on the edge of a rotating merry-go-round, which has a radius of 12 ft.
For the infinite square well problem an electron spends 40% of its time in the n=3 state and 60% of its time in the n=5 state. What is the average energy of the electron
Imagine a stationary sourceof sound waves. By stationary, we mean that it is not moving with respect to the medium. How fast would you have to move toward the source in order to perceive twice the “actual”frequency? The speed of sound in air is 34..
the pressure att he depth of 1.25 m in a tank of liquid is measured to be 125.5 kpa. the tank is open to the outside
the atomic bomb dropped on hiroshima had an explosive energy equivilent to that of 2.1 x 104 tons of tnt or 8.82 x 1013
a uniform disk with radius 0.350m and mass 25.5 kg rotates in a horizontal plane on a friction-less vertical axle that
A car originally at 14 m/s ( about 50 kph) covered a distance of 250 m. If its speed at the end of trip is 20 m/s ( about 72 kph), how long did it take the car to cover that distance
A cat walks 8.0 m north, 5.0 m east and then 6.0 m south. What is the magnitude of the cats displacement from the starting point
A positively charged oil drop of mass is injected into a region of uniform electric field between two oppositely charged, horizontally oriented plates spaced 16 cm apart. what is the magnitude of the charge on the drop
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