Discuss the role that gravity assist played in Voyager 2 and its Grand Tour
What will be an ideal response?
By using the gravities of the jovian planets, the Voyager 2 was able to speed past all four of them in its historic mission between 1977 and 1989.
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You are racing away from Earth in a super space ship in which you can continually increase your speed by firing engines that never quit. Which of the following best explains how people on Earth will perceive your speed?
A) They will see your speed getting closer and closer to the speed of light, but never reaching it. B) They will know you are going very fast, but will have no way to know if you ever exceed the speed of light. C) They will see you speed up until you reach the speed of light, and then your speed will remain constant after that. D) They will see you going faster and faster until you reach the speed of light, and after that they won't be able to see you any more.
The expansion rate of the Universe is
A) increasing. B) decreasing. C) constant. D) different in different directions. E) independent of time.
A sample of an ideal gas is slowly compressed to one-half its original volume with no change in temperature. What happens to the average speed of the molecules in the sample?
A) It does not change. B) It becomes 4 times as great. C) It becomes 2 times as great. D) It becomes 1/2 as great. E) It becomes 1/4 as great.
When scattering 3.28 Angstrom X-rays off a crystal an interference maximum occurs at a scattering angle of 23.0 degrees. At what angle does the second maximum occur?
A. 51.3o B. 46.0o C. 34.5o D. there is no second maximum.