Find possible paths light signal follow if passes switches
A certain type of optical switch in a fiber-optic system allows a light signal to continue in one of two fibers. How many possible paths could a light signal follow if it passes through 600 such switches?
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Find the hydrogen-ion concentration. (If pH < 7, the solution is acid. If pH > 7, the solution is basic.) Acid rain has a pH between 4 and 5, and normal rain is slightly acidic with a pH of about 5.6.
How many moles of gas are present when the pressure is 750mm Hg, the volume is 18,600 Ml, and the temperature is 25C?
Studies have shown that the concentration (in mg/cm3 of blood) of aspirin in a typical person is related to the time t (in h ) after the aspirin reaches maximum concentration by the equation ln c = ln 14-0.32t.
Various members of a class of compounds, alkenes (Chapter11), react with hydrogen to produce a corresponding alkane. Termed hydrogenation, this type of reaction is used to produce products such as margarine.
Determine the diameter of the pupils of his eyes that would be required for him to be able to resolve the squirrels as separate objects. In this calculation use a wavelength of 498 nm (in vacuum) for the light.
Calculate the frequency of the light emitted by a hydrogen atom during a transition of its electron from the n= 4 to the n = 2 principal energy level.
Your accident-reconstruction team has been hired by the local police to analyze the following accident. A careless driver rear-ended a car that was halted at a stop sign. Just before impact, the driver slammed on his brakes, locking the wheels.
According to the Heisenberg uncertainty principle, if the uncertainty in the speed of an electron is 2.5x103m/s,the uncertainty in this position (in m) is at least (mass electron= 9.11x10-28g):
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