How many times must a dip in the brightness of a star be seen in order to detect a planet with the transit technique?
A) 1 time B) 2 times C) 3 times D) 4 times
C
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Speaking about seeing- what part of the Sun do we see?
A: Inner Core B: Radiation Zone C: Convection Zone D: Photosphere E: Corona
Suppose that a car traveling to the West (-x direction) begins to slow down as it approaches a traffic light. Make a statement concerning its acceleration
A) The car is decelerating, and its acceleration is positive. B) The car is decelerating, and its acceleration is negative. C) The acceleration is zero. D) A statement cannot be made using the information given.
An American football field, including end zones, is 360 feet long and 160 feet wide. If you needed to describe it for someone in Europe using the metric system,
which one of the following quantities would be closest to its area in square meters? (2.54 cm = 1.00 in.) A) 4,920 m2 B) 5,350 m2 C) 88.0 m2 D) 12,100 m2 E) 13,200 m2
Very early in his thinking about relativity, Einstein asked himself what a person would observe if he or she kept up with a lightbeam. In answer to this question, the theory of relativity states that
A) this is not a valid question because a person cannot move as fast as a lightbeam. B) the light beam would stand still and so time would stand still. C) the observer would suddenly undergo a sex change. D) the observer own would continue to observe the same laws of physics. E) time would speed up without limit, and would pass at an "infinite" rate.