Take a cup of water, add sugar, and stir. If the resulting solution contains sugar crystals that do not dissolve, the solution is said to be
a. an unsaturated solution.
b. a saturated solution.
c. a homogeneous solution.
d. none of these.
b
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Momentum: A firecracker breaks up into two pieces, one of which has a mass of 200 g and flies off along the +x-axis with a speed of 82.0 m/s. The second piece has a mass of 300 g and flies off along the +y-axis with a speed of 45.0 m/s. What is the total momentum of the two pieces?
A. 361 kg ? m/s at 56.3° from the +x-axis B. 93.5 kg ? m/s at 28.8° from the +x-axis C. 21.2 kg ? m/s at 39.5° from the +x-axis D. 361 kg ? m/s at 0.983° from the +x-axis E. 21.2 kg ? m/s at 56.3° from the +x-axis
Earth's distance from the Sun varies during the year Earth's distance from the Sun varies during the year by _____.
a. by 30%. b. by 3%. c. by 10%. d. not at all.
The type of radio wave that produces the least static in a radio receiver is
A) AM. B) FM. C) neither of these
A stream of a certain liquid compound is attracted to an electrically charged rod. The compound is probably
a. metallic. b. nonpolar covalent. c. ionic. d. polar covalent.