Which moon shows evidence of rainfall and erosion by some liquid substance?
A. Europa
B. Titan
C. Ganymede
Ans: B. Titan
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Which space mission orbited Saturn and dropped a probe into Saturn's atmosphere?
a. Pioneer b. Voyager c. Galileo d. Cassini-Huygens e. New Horizons
A large spherical tank is filled with liquid nitrogen at -200ºC. Using an approximation that the elements of the sphere are infinite walls with initial temperature of 10ºC, when the surroundings are at 10ºC as shown, predict the temperature through the wall after 5 minutes using graphical techniques. The tank is 1% carbon steel, 2 cm thick, and the convective heat transfer coefficients are 40 W/m^2 K for air and 60 W/m^2 K for the nitrogen. Also determine the time before the outside wall reaches 5ºC.
What is one piece of evidence for dark matter?
A. the existence of many dark cool dust clouds that do not emit radiation B. the presence of neutrinos C. the existence of many planetary systems D. the fact that the rotation curves of most galaxies become flat at large distances from the center
Why do you think that more plants per capita in Europe than in the United States burn municipal solid waste? Give your reasons, and explain the differences
What will be an ideal response?