The Moon is in the habitable zone of the Sun at the same distance as the Earth but is not habitable. How can this be?
A) the Moon did have water on its surface in the past, but it was destroyed by high-energy particles from the Sun
B) the Moon has never had water on its surface at any time
C) the Moon is too small to retain an atmosphere necessary for liquid water to be stable
D) the Moon did have water on its surface in the past, but it was blasted off the surface by impacts
C
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Why are neutrinos so difficult to detect?
A) because there are so rare B) because they have no mass C) because they move at nearly the speed of light D) because they rarely interact with matter E) because they are so small
According to the principle of equivalence, observations made of falling objects at Galileo's Leaning Tower of Pisa are indistinguishable from observations made in
A) a spaceship orbiting in a gravitational field. B) a spaceship accelerating at g in deep space. C) any uniformly moving reference frame. D) all of the above E) none of the above
A hornet circles around a pop can at increasing speed while flying in a path with a 12-cm diameter. We can conclude that the hornet's wings must push on the air with force components that are
a. straight down. b. down and inwards. c. down and outwards. d. down and backwards. e. down, backwards and outwards.
5.00 ?F, 10.0 ?F, and 50.0 ?F capacitors are connected in series across a 12.0-V battery. (a) How much charge is stored in the 5.00-?F capacitor? (b) What is the potential difference across the 10.0-?F capacitor?
What will be an ideal response?