How do colors differ when viewed under incandescent light and fluorescent light?
Because incandescent light contains a higher ratio of reds and oranges, these colors
predominate when seen under this type of light. Most objects have a "warm
coloration" when seen under incandescent light. Fluorescent light often contains
higher ratios of blue and green; a "cooler" appearance is observed because of the
domination of these shorter wavelength colors. Modern "cool white" fluorescent
lamps do not produce this effect as much as older or less expensive fluorescent lamps
do. The newer tubes have been carefully color-corrected by adjusting the phosphors
found on the inside of the tube to give off light that more closely approximates
noontime sunlight and is thus closer to incandescent light.
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A 400-kg box is lifted vertically upward with constant velocity by means of two cables pulling at 40.0° on either side of the vertical direction. What is the tension in each cable?
A) 231 N B) 400 N C) 800 N D) 2560 N E) 3920 N
An incompressible fluid is flowing through a vertical pipe with a constriction. The wide section is 2.00 cm in diameter and is at the top of the pipe. The pressure of the fluid in the wide section at the top is 200 kPa. The velocity of the fluid in the wide section is 4.00 m/s. The narrow section is located 4.00 m below the wide section. What is the diameter of the narrow section for the pressure of the fluid in the narrow section to equal the pressure in the wide section? (density of the fluid is 680 
A. 1.50 cm B. 1.43 cm C. 1.36 cm D. 1.28 cm E. 1.15 cm
The force that accelerates the orange and apple system featured in your textbook is actually supplied by the
A) apple. B) orange. C) floor.
(Do not try the following: it could kill you. This question is only about a hypothetical possibility.) If you were standing below an object emitting a fixed frequency sound falling at terminal velocity, as it approached you, you would hear the sound
a. drop in frequency. b. stay at the same frequency. c. increase in frequency. d. decrease in loudness. e. stay at the same loudness.