A future astronaut exploring Mars would
A) need to stay inside a spacecraft at all times
B) be able to walk on the surface at any time wearing only warm clothing
C) need to wear a spacesuit at all times
D) need to wear a spacesuit only during the winter
C
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When did life first appear on Earth?
a. 14 billion years ago b. 400 million years ago c. 4.6 billion years ago d. 65 million years ago e. 3.4 billion years ago
Describe the properties of meteoroids
What will be an ideal response?
Newton never knew the numerical value of "his" universal gravitational constant G
Indicate whether the statement is true or false
Can the temperature of an ideal gas and the internal energy of an ideal gas increase with no energy transfer by heat?
1.No, if there is no energy transfer by heat to an ideal gas, then the internal energy of the gas must stay constant and so must its temperature. 2.No, although the internal energy of the ideal gas may increase with no energy transfer by heat, the temperature of the gas will not change. 3.Yes, the temperature of an ideal gas and the internal energy of an ideal gas can increase with no energy transfer by heat. 4.No, although the temperature of the ideal gas may increase with no energy transfer by heat, the internal energy will not change.