Rank the magnitude of the electric field at points A, B, and C in the figure below, largest magnitude first
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Absolute visual magnitude is
a. the apparent magnitude of a star observed from Earth. b. the luminosity of a star observed from a distance of 1000 pc. c. the apparent magnitude of a star observed from a distance of 10 pc. d. the luminosity of a star observed from Earth. e. c and d
Intensity of Sound: A certain siren radiates sound uniformly in all directions. At a distance of 17 m from the siren, the intensity level is 49 db. How many watts of power does this siren put out? The threshold of human hearing is 1.0 × 10-12 W/m2.
Fill in the blank(s) with the appropriate word(s).
Which galaxy do you come from?
A: The Andromeda Galaxy. B: The Milky Way Galaxy. C: The Virgo Galaxy. D: The Antenna Galaxy. E: The Whirlpool Galaxy.
A 3.2-L volume of neon gas (Ne) is at a pressure of 3.3 atm and a temperature of 330 K. The atomic mass of neon is 20.2 g/mol,
Avogadro's number is 6.022 × 1023 molecules/mol, and the ideal gas constant is R = 8.314 J/mol • K = 0.0821 L • atm/mol • K. The mass of the neon gas is closest to A) 7.9 × 10-3 kg. B) 4.6 × 10-3 kg. C) 3.8 kg. D) 7.8 kg. E) 7.8 × 102 kg.