We believe binary stars to be the ________ likely to have an extraterrestrial civilization
Fill in the blank(s) with correct word
least
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Why is it important for a chemist to know the relative masses of atoms?
A) There are not that many different kinds of atoms and so it's important to know how they relate to one another. B) It provides information about how many atoms two samples have relative to each other. C) It provides an indication of how the different atoms will interact. D) Because the mass of an atom is directly related to its chemical properties.
If the temperature of a room is 60
then what is the temperature of the room in Celsius?
A. 26.2
B. 24.0
C. 21.4
D. 19.7
E. 15.6
The principal advantage of ac power over dc power is that
A) more energy is dissipated during transmission. B) ac voltage oscillates while dc voltage does not. C) ac voltage can be transformed via conventional transformers. D) ac circuits multiply power more easily. E) ac circuits are safer.
Green light has a wavelength of 5.4 × 10^?7 m. What is the frequency of this EM-wave in air?
a. 5.56 × 10^14 Hz b. 6.00 × 10^11 Hz c. 9.00 × 10^8 Hz d. 3.00 × 10^10 MHz e. 1.80 × 10^15 Hz