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1. How many silicon atoms are there for the energy band diagram shown in Figure. Is the number of levels in the conduction and valence bands drawn consistently and why?
2. How many energy levels are there in the Ge valence band for a Ge crystal of 1.0 cm3? Repeat this for Si.
The car encounters a loop of radius R = 18 m at ground level. As you will learn in the course of this problem, the initial height 54.00 m is great enough so that the car never loses contact with the track.
A 78 kg cross-country skier glides over snow as in the figure below. The coefficient of friction between skis and snow is 0.50. Suppose all the snow beneath his skis is at 0°C and that all the internal energy generated with friction is added to snow,
A cable lifts a 990 kilogram elevator at a fix velocity for a distance of 37 meter. Find the work done by the elevator weight
a 62.9 kg astronaut is on a space walk when the tether line tothe shuttle breaks. find the final speed of the astronaut after throwing the tank
What would be the angle of the first diffraction pattern for a 680 nm laser submerged in water (n=1.33), if the diffraction grating has 600 lines per mm
Consider an Ising model of just two elementary dipoles, whose mutual interaction energy is ±ε. Enumerate the states of this system and write down their Boltzmann factors. Calculate the partition function. Find the probabilities finding of the dipo..
A student stands on a bathroom scale in an elevator at rest on the 64th floor of a building. The scale reads 845 Newton. Estimate what is the acceleration of the elevator
Calculate the maximum potential difference that can be maintained across a 40- mm layer of polyethylene
A student throws a 110 gram snowball at 8 meter per second at the side of the schoolhouse. determine where it hits and sticks
A 30 µF capacitor is charged to 88 V and is then connected across a 440 ? resistor. What is the initial charge on the capacitor? What is the initial current just after the capacitor is connected to the resistor?
For each fluid, determine the velocity and thermal boundary layer thicknesses at a distance of 40 mm from the leading edge
A 45.4 kg girl is standing on a 144 kg plank. The plank, at first at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. The girl begins to walk along the plank at a constant velocity of 1.60 m/s relative to the plank. Wha..
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