Ascanning tunneling microscope is used to measure small changes in height of a surface by detecting changes in the tunneling current between the tip and the surface. the current is proportional to the tunneling coefficient (ie. i = const * t) which follows the general equation for tunneling through a square well , with c dependent on the molecule and l is the distance. the transmission coefficient at one point is t = 0.01, what is the relative current if the distance is increased from l to 5l? we are interested in i(5l)/i(l). (note: there may be more information provided than you need to solve the problem.)
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Physics, 22.06.2019 12:40
Estimate the schwarzschild radius (in kilometers) for a mini-black hole formed when a superadvanced civilization decides to punish you (unfairly) by squeezing you until you become so small that you disappear inside your own event horizon. (assume that the your weight is 50 kg)
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Physics, 22.06.2019 13:40
An ideal otto cycle has a compression ratio of 10.5, takes in air at 90 kpa and 40°c, and is repeated 2500 times per minute. using constant specific heats at room temperature, determine the thermal efficiency of this cycle and the rate of heat input if the cycle is to produce 90 kw of power.
Answers: 2
Ascanning tunneling microscope is used to measure small changes in height of a surface by detecting...
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