The Drake Equation is attempting to find
A) the number of planets with life on them in the whole universe.
B) the number of technological civilizations in the Galaxy at a given moment.
C) the number of stars that might have planets orbiting them.
D) the number of planets in the Milky Way Galaxy.
E) the total number of terrestrial planets ever created.
B
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Index of Refraction: Light of wavelength 550 nm in air is found to travel at 1.96 × 108 m/s in a certain liquid. (c = 3.0 × 108 m/s)(a) What is the index of refraction of this liquid?(b) What is the frequency of the light in air?
What will be an ideal response?
Most small moons tend to be old and geologically inactive. Explain why Enceladus appears to break that general rule
What will be an ideal response?
A protostar of 20 solar masses should form a star that will stay on the main sequence twenty times longer than our Sun
Indicate whether the statement is true or false
A fountain sends water to a height of 100 meters. What must be the pressurization (above atmospheric) of the water system? 1 ATM = 1.01 × 10^5 N/m2
a. 1.0 ATM b. 4.2 ATM c. 7.2 ATM d. 9.7 ATM e. 8.2 ATM