Explain the appearance of the Sun's spectrum, as noted by Fraunhofer
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The Sun is dense, and gives rise to a continuous spectrum, peaked in the color yellow as dictated by the 5800K temperature of its surface. Then the cooler, less dense gas above the surface absorbs some of the energy in transit, revealing its composition by the particular absorption lines we observe from Earth.
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How have we been able to construct detailed maps of surface features on Venus?
A) by studying Venus from Earth with powerful telescopes B) by studying Venus with powerful optical telescopes on spacecraft that were sent to orbit Venus C) by making computer models of geological processes on Venus D) by using radar from spacecraft that were sent to orbit Venus E) by landing spacecraft on the surface for close-up study
How much kinetic energy does a proton gain if it is accelerated, with no friction, through a potential difference of 1.00 V? The proton is 1836 times heavier than an electron, and e = 1.60 × 10-19 C
A) 1836 eV B) 1.00 eV C) 1.60 × 10-19 eV D) 1.00 J E) 1836 J
The correct sequence of spectral type letters from hot on the left to cool on the right is
a. M, K, G, F, A, B, O b. O, B, A, F, G, K, M c. G, K, M, F, O, B, A d. A, B, O, F, G, K, M
A 2-qt bottle of soda is on sale for $1.29. What should be the price of a 2-Liter bottle of the same soda to yield the same value?
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