According to the principle of equivalence in general relativity,
1) space and time are aspects of each other.
2) energy and mass are aspects of each other.
3) electricity and magnetism are aspects of each other.
4) observations made in an accelerating frame are indistinguishable from observations made in a gravitational field.
5) all of the above.
Einstein's gravitation theory obeys the principle of correspondence in that it
6) corresponds to a truer description of events in very strong gravitational fields.
7) is a special case of Newton's theory.
8) has been proven in repeated experiments.
9) agrees with the proven results of Newton's theory.
10) cannot distinguish between observations made in an accelerating frame and a gravitational field.
Question 2
Light bends as it
1) passes a massive star,
2) traverses any gravitational field,
3) both of these,
4) none of these,
and when emitted from a massive star, light is
5) red shifted.
6) blue shifted.
7) speeded up.
8) none of these.
Lunokhod 1 (lit. moonwalker), the first successful space rover.
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