What is the de Broglie wavelength of an electron traveling 100 m/s?
7.28 × 10^?6 m
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Ignoring air resistance, the velocity of a falling object
A. is constant B. increases for a while, then becomes constant. C. depends on the mass of the object. D. is constantly increasing
When Joshua brakes his speeding bicycle to a stop, kinetic energy is transformed to
A) potential energy. B) energy of motion. C) energy of rest. D) heat.
Two springs, each with spring constant k, are attached end to end in a series fashion. A second pair of identical springs are also attached in series fashion. Then the pair of series attached springs are attached in parallel to each other. What is the effective spring constant of the resulting combination of springs?
a. k/2 b. 2k c. either k/4 or 4k d. k
A rotary solid sorption dehumidifier is used to dehumidify air at 95ºF, 60% relative humidity. If the dehumidifier performance map is like that shown in Figure 8-24, estimate the outlet dry air temperature and its relative humidity. Then estimate the rate of water removed from 100 cfm of air.
