Liquid crystal displays make use of interference of light
Indicate whether the statement is true or false
F
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A spectroscopic binary shows periodic variations in its
a. radial velocity. b. proper motion. c. brightness. d. mass. e. spectral type.
The _______________ temperature scale is used in astronomy because it is based on absolute zero
Fill in the blank(s) with correct word
A non-uniform meter stick is found to balance on a knife edge at the 60-cm mark. Where is the center of gravity of the meter stick?
A. at the 40-cm mark B. at the 45-cm mark C. at the 50-cm mark D. at the 55-cm mark E. at a position not given
If you toss 100 coins simultaneously, there are many different ways for half the coins to land with half having heads facing up and half with tails facing up. How many ways are there to have all heads, and what does this imply?
a. As many ways as there are to have half heads and half tails, and it implies that both events are just as likely. b. As many ways as there are to have half heads and half tails, and it implies that half heads and half tails is a much more likely outcome. c. Two ways only, and this implies that all heads is unlikely. d. One way only, and this implies that it is much less likely to have all heads than to have half heads and half tails. e. One way only, implying that it is just as likely as for half heads and half tails.