A space station in the form of a large wheel, 120 m in diameter, rotates to provide an "artificial gravity" of 3.00 m/s2 for persons located at the outer rim. Find the rotational frequency of the wheel (in revolutions per minute) that will produce this effect
2.14 rpm
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In the color wheel shown below, which colors are the secondary colors?
A. red, yellow, blue B. orange, green, purple C. green, blue, purple D. yellow, orange, red
How would you expect a star that formed recently in the disk of the galaxy to differ from one that formed early in the history of the disk?
A) It should have a higher fraction of elements heavier than hydrogen and helium. B) It should be higher in mass. C) It should be much more luminous. D) It should orbit the galactic center at a much higher rate of speed. E) All of the above differences would be expected.
Four unequal resistors connected in series have same current but different voltages
Indicate whether the statement is true or false
The most accurate Greek attempt to explain planetary motion was the model of
A) Aristotle. B) Pythagoras. C) Hipparchus. D) Ptolemy. E) Erastothenes.