The spreading of different wavelengths of light due to slightly different indices of refraction is known as
A. Refraction
B. Dispersion
C. Immersion
D. Total internal reflection
Ans: B. Dispersion
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The satellites discovered by Galileo
a. orbit the planet Jupiter. b. orbit the terrestrial planets. c. orbit asteroids. d. orbit Mars. e. orbit extrasolar planets.
A hydraulic jack has a mechanical advantage allowing a puny human to lift a car. Which of the following statements is true?
A. the input force is equal to the output force B. the area of the input piston is equal to the area of the output piston C. the distances the input and output pistons move are equal D. the work done by the output piston is equal to the work done on the input piston
A marble rolls back and forth along the path shown. When it is at position B, its kinetic energy is
1) maximum, 2) minimum, 3) midway between maximum and minimum, its momentum is 4) maximum, 5) minimum, 6) midway between maximum and minimum, and its potential energy is 7) maximum. 8) minimum. 9) midway between maximum and minimum.
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.
