Specific heat capacity of ice = 2,000 J/kg-°C latent heat of fusion of water = 334,000 J/kg specific heat capacity of water = 4,000 J/kg-°C As the ice is melting, the temperature of the ice-water mixture rises by 10°C
Indicate whether the statement is true or false
F
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Match the words at the left to the correct blanks in the sentences at right. Use each choice only once.
A. Spacecraft images show fountains of ice spraying into space from Saturn's moon _________ B. Jupiter has three moons for which there is evidence of a global, subsurface ocean of liquid water, with the strongest evidence favoring an ocean on _________ C. ______ is the most volcanically active world in the solar system. D. Scientists have detected lakes of liquid methane and ethane on the surface of __________ E. The two moons that are larger than the planet Mercury are Titan and __________, which is also the largest of Jupiter's moons (and largest moon in the solar system).
Abby throws a ball straight up and times it. She sees that the ball goes by the top of a flagpole after 0.50 s and reaches the level of the top of the pole after a total elapsed time of 4.10 s
What was the speed of the ball at as it passed the top of the flagpole? A) 6.40 m/s B) 16.2 m/s C) 17.6 m/s D) 29.0 m/s E) 33 m/s
Like the near side of the Moon, the far side has the same general features, a mix of maria and highlands.
Answer the following statement true (T) or false (F)
How do we determine the conditions that existed in the early universe?
A) We work backward from current conditions to calculate what temperatures and densities must have been when the observable universe was much smaller in size. B) We look all the way to the cosmological horizon, where we can see the actual conditions that prevailed all the way back to the first instant of the Big Bang. C) The conditions in the very early universe must have been much like those found in stars today, so we learn about them by studying stars. D) We can only guess at the conditions, because we have no way to calculate or observe what they were.