What kinematic quantity is indicated by the speedometer of an automobile?
Instantaneous speed.
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Process of Science: What is Occam's razor?
A) The idea that scientists should prefer the simpler of two models that agree equally well with observations. B) The principle that everyone should agree on a theory before it is considered correct. C) A long, steep cliff on Mercury that may have been produced as the planet contracted as it formed. D) The principal that any theory can be verified by others. E) An unusual implement that Professor Occam uses to remove facial hair.
Angular momentum plays an important role in star formation. Which of the following characteristics of a protostellar system is probably not strongly affected by the star's angular momentum?
A) the strength of protostellar winds B) the existence of protostellar jets C) the formation of a protostellar disk D) the onset of core hydrogen fusion
The nearest comparable galaxy to our own lies in the constellation of
A) Orion. B) Andromeda. C) Sagittarius. D) Cygnus. E) Virgo.
Metric System: Express the number 13.5 gigameters in meters without using scientific notation.
A. 135,000 m B. 135,000,000 m C. 135,000,000,000 m D. 13,500,000,000 m