When we say that jovian planets contain significant amounts of hydrogen compounds, we mean all the following chemicals except
A) water.
B) carbon dioxide.
C) ammonia.
D) methane.
B
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The first living organisms probably resembled
A) single-celled eukaryotes B) multicellular eukaryotes C) single-celled prokaryotes D) multicellular prokaryotes
Suppose you look at a spectrum of visible light by looking through a prism or diffraction grating. How can you decide whether it is an emission line spectrum or an absorption line spectrum?
A) The only way to decide is to make a graph of the intensity of the light at every wavelength, and then analyze the graph carefully. B) An emission line spectrum consists of a long bright line, while an absorption line spectrum consists of a long dark line. C) An emission line spectrum consists of bright lines on a dark background, while an absorption line spectrum consists of dark lines on a rainbow background. D) The emission line spectrum is produced by electrons jumping up in energy level, while the absorption line spectrum is produced by electrons jumping down in energy level.
A spaceship, traveling at 0.100c away from a stationary space platform, launches a secondary rocket towards the station, with a speed of 0.560c relative to the spaceship. What is the speed of the secondary rocket relative to the space platform?
A) 0.460c B) 0.487c C) 0.492c D) 0.660c
At the Earth’s orbital distance, the intensity of the solar radiation is approximately 1400 
What is the value for the rms Electric field strength in solar radiation?
A. 726 V/m B. 363 kV/m C. 527 kV/m D. 513 kV/m