Which of the following statements is correct?
1.If an equation is dimensionally correct it must be true and if it is not dimensionally correct it may be true.
2.If an equation is dimensionally correct it may be true and if an equation is not dimensionally correct it may be true.
3.If an equation is dimensionally correct it may be true and if it is not dimensionally correct then it cannot be true.
4.If an equation is dimensionally correct it must be true and if an equation is not dimensionally correct it cannot be true.
4
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An inductor and a resistor are connected in series across an AC generator as in Figure OQ33.1. Immediately after the switch is closed, which of the following statements is true?
If a planet is seeing its Moon in the New Phase right now, in what phase would the planet appear to be when viewed from its Moon?
a) Third Quarter Planet b) Full Planet c) New Planet d) You can't see the planet from its Moon e) First Quarter Planet
From the video on GPS, how many satellites are needed in order to locate your exact position?
a. 2 b. 4 c. 5 d. 7
The Drake equation calculates N. What is N?
A) the number of intelligences in the entire universe B) the number of technical civilizations in our galaxy presently C) the number of stars with habitable planets D) the number of planets with life in the universe E) the number of planets in just our galaxy