The temperature of water rises when 2.00 calories are added. It will rise the same when
A) 4.19 J are added.
B) 8.38 J are added.
C) 83.4 J are added.
Answer: B
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Which sequence of numbers represents the correct order of the following four steps in the user needs analysis process?
(1.) investigate alternatives to the current system (2.) make a build-versus-buy decision (3.) identify sources of information (4.) understand the organization's goals a. 1-2-3-4 b. 4-3-2-1 c. 3-1-4-2 d. 4-3-1-2
What happened at 10-33 seconds when quarks could bind together for the first time?
A: the universe became transparent B: the expansion of the universe began C: helium formed D: protons and neutrons formed E: atoms formed
Why does Michael Jordan appear to defy gravity as he slam dunks the ball? (After you have thought about this question, see page 68 of your textbook.)
a. He is an extraordinary athlete who is able to jump much higher than most humans. b. His motion is that of a projectile, and a projectile's motion is such that its vertical speed is minimal while at the high point of its trajectory. c. He is able to use air resistance to cushion his vertical motion. d. He is in the process of moving upward. e. His horizontal motion keeps him above the ground.
Quasars are____
a. spiral galaxies with unusually luminous nuclei b. elliptical galaxies with very broad emission lines c. explained by the double-exhaust model d. extremely luminous objects with high redshifts e. glowing green gases due to excitation from energy from an active core