______________ is the symbol for the universal gravitational constant
Fill in the blank(s) with correct word
G
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Which of the following statements is true (only one):
a. The growth rate of energy consumption has kept pace with GNP growth. b. Oil use has expanded more than any other fuel since 1940. c. We reached the point last year where we imported no oil. d. Electricity use has actually fallen since 1975.
In a(n) ______ live chat, a chat window opens automatically.
A. proactive B. agent C. sidebar D. broadcast
Work-Energy Theorem: A 4.0 kg object is moving with speed 2.0 m/s. A 1.0 kg object is moving with speed 4.0 m/s. Both objects encounter the same constant braking force, and are brought to rest. Which object travels the greater distance before stopping?
A. the 4.0 kg object B. the 1.0 kg object C. Both objects travel the same distance. D. It cannot be determined from the information given.
Which of the following is not a method astronomers use to determine the physical conditions inside the Sun?
A) observing x-ray images of the solar interior using satellites B) building mathematical models that use the laws of physics C) detecting solar neutrinos generated in the Sun's core D) measuring Doppler shifts to observe solar vibrations