What is believed to have been the main source of Titan's atmosphere?
A) outgassing from the interior
B) gas captured from the solar nebula
C) we have no idea
D) comet impacts
A
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In a Young's double-slit interference apparatus, by what factor is the distance between adjacent light and dark fringes changed when the wavelength of the source is doubled?
a. 1/4 b. 1/2 c. 1 d. 2 e. 4
Beam ACB has a pin support at A and is supported at C by a steel column with a square cross section (E 5 190 GPa, b 5 42 mm) and height L 5 5.25 m. The column is pinned at C and fixed at D. The column must resist a load Q at B with a factor of safety of 2.0 with respect to the critical load. The maximum permissible value of Q is approximately:
(A) 3.0 kN
(B) 6.0 kN
(C) 9.4 kN
(D) 10.1 kN
Contrast the Oort Cloud and the Kuiper Belt
What will be an ideal response?
A 2-mol ideal gas system undergoes an adiabatic process where it expands and does 20 J of work on its environment. How much heat is received by the system?
a. ?20 J b. zero c. +10 J d. +20 J e. ?10 J