One piece of evidence against the possibility of water on Mars is:

A) the current lack of water on Mars.
B) the fact that the polar ice caps are made of carbon dioxide ice.
C) the volcanic activity on Mars.
D) the few carbonate rock layers that would have formed on the bottoms of oceans.
E) the "hydrated" chemical compounds found on surface rocks all over the planet.


D

Physics & Space Science

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If we use 1 millimeter to represent 1 light-year, about how large in diameter is the Milky Way Galaxy?

A) 100 millimeters B) 100 meters C) 1 kilometer D) 100 kilometers E) 1 million millimeters

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As you’ve learned from Part B, hydrogen and helium gas never condense under conditions found in the solar nebula. The remaining three categories of material in the solar nebula are shown again here. Rank these materials from left to right based on the distance from the Sun at which they could condense into a solid in the solar nebula, from farthest to closest.

What will be an ideal response?

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Two masses, A and B, are attached to different springs. Mass A vibrates with an amplitude of 8 cm at a frequency of 10 Hz and mass B vibrates with an amplitude of 5 cm at a frequency of 16 Hz

How does the maximum speed of A compare to the maximum speed of B? A) Mass A has the greater maximum speed. B) Mass B has the greater maximum speed. C) They are equal.

Physics & Space Science

A ball is dropped from a rooftop of a building and falls for two seconds. The acceleration of gravity is 9.8 m/s2 . The ball is referred to at the two-second time. The ball is referred to at the two-second time. The acceleration is __________

Fill in the blank(s) with correct word

Physics & Space Science