Which of the following substances has the greatest specific heat?
a. copper
b. ice
c. water
d. steam
e. Ice, water, and steam have equal specific heats since they are the same material, and this specific heat is greater than that of copper.
C
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A star is observed with a surface temperature of 3000 K and a luminosity of 10?3 times that of the Sun. Based on the H-R diagram shown above, what is the approximate radius of this star?
A) 0.1 solar radius B) 0.5 solar radius C) 1 solar radius D) The radius cannot be determined.
Star clusters have been observed within dark nebulae with:
A) optical movies made over decades. B) radio interferometers. C) infrared observations. D) the Chandra X-ray observatory. E) ultraviolet light creating the emission nebulae.
This photo shows an undersea volcanic vent. What is it, and what is its significance to the study of the origin of life?
A) Genetic studies suggest that life may have originated around vents like this one. B) It is the place where we have found the oldest living organisms on Earth. C) It is the place where we have found the oldest fossils on Earth. D) It shows that fires can burn underwater.
Evidence of liquid water has not been seen on which of these jovian moons?
A) Titan B) Ganymede C) Europa D) Mimas