A cell's DNA molecules are constructed of
a. amino acids.
b. proteins.
c. sugars, phosphates, and bases.
d. all of the above
e. none of the above
C
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Angular Quantities: Express the angular speed of an old 33 1/3 rpm LP in rad/s.
Fill in the blank(s) with the appropriate word(s).
Planet A has twice the mass of Planet B. From this information, what can we conclude about the acceleration due to gravity at the surface of Planet A compared to that at the surface of Planet B?
A) The acceleration due to gravity on Planet A is greater than the acceleration due to gravity on Planet B, but we cannot say how much greater. B) The acceleration due to gravity on Planet A must be four times as great as the acceleration due to gravity on Planet B. C) The acceleration due to gravity on Planet A must be twice as great as the acceleration due to gravity on Planet B. D) The acceleration due to gravity on Planet A is the same as the acceleration due to gravity on Planet B. E) We cannot conclude anything about the acceleration due to gravity on Planet A without knowing the radii of the two planets.
What maximum power can be generated from an 18-V emf using any combination of a 6.0-W resistor and a 9.0-W resistor?
a. 54 W b. 71 W c. 90 W d. 80 W e. 22 W
The reddish particles in Jupiter's ring are less than 1 percent as reflective as Saturn's whiter particles. Saturn's ring particles are thought to be ____while Jupiters are thought to be ______
a. icy; rocky b. rocky; icy c. icy; also icy d. rock; also rock