Life will most likely be able to appear and evolve on a planet around which stage of a star's life?
A) core hydrogen-fusion
B) shell helium-fusion
C) core helium-fusion
D) shell hydrogen-fusion
A
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Venus's atmosphere lacks water because the Sun's ultraviolet rays tend to break up any water molecules at the top of the atmosphere.
Answer the following statement true (T) or false (F)
The Very Long Baseline Interferometer (VLBI)
a. is the highest resolution optical telescope ever built. b. is located in Arecibo, Puerto Rico. c. is a matched pair of 8 m telescopes, one of which is in Chile and the other in Hawaii. d. is an air-borne infrared telescope. e. is a set of radio telescopes linked together electronically to provide very high resolution.
Consider a system consisting of two Einstein solids P and Q in thermal contact. Assume that we know the number of atoms in each solid and ?. What do we know about the system if we also know the total energy of the combined system?
A. Its macrostate B. Its microstate C. Its macropartition D. Its microstate and macropartition E. Its macrostate and macropartition F. Its macrostate and microstate T. Its macrostate, microstate, and macropartition
If the velocity of an object is non-zero, can the acceleration of the object be zero?
A. Yes B. No