In the development of a terrestrial planet, the stage of ___________ occurred when molten rock flowed through fissures and filled deep basins
a. differentiation
b. cratering
c. glaciation
d. accretion
e. flooding
e
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Starch is a polymer that consists of long chains of ______________ units
a. lactose b. fructose c. maltose d. glucose
Werner Heisenberg's main contribution to the development of quantum theory was
A) the nonlocality principle. B) his explanation of the photoelectric effect, in terms of photons. C) a method for predicting the position at which electrons or other particles will strike the viewing screen in such experiments as the electron double-slit experiment. D) a method for predicting the overall statistical patterns that appear in the electron double-slit experiment and other experiments using microscopic particles. E) the uncertainty principle.
A -7.0-?C point charge has a positively charged object in an elliptical orbit around it
If the mass of the positively charged object is 1.0 kg and the distance varies from 5.0 mm to 20.0 mm between the charges, what is the maximum electric potential difference through which the positive object moves? (k = 1/4??0 = 8.99 × 109 N • m2/C2) A) 9.4 MV B) 3.2 MV C) 4.2 MV D) 16 MV
Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m.The increase of potential energy of the box is
a. 0 b. 4 J. c. 100 J. d. none of the above.