Interferometry is easiest to use with telescopes that observe at very short wavelengths
a. True
b. False
Indicate whether the statement is true or false
False
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A 0.50 gas tank holds 3.0 moles of ideal diatomic nitrogen gas at a temperature of The atomic mass of nitrogen is . What is the rms speed of the molecules? (The Boltzmann constant is 1.38 × 10-23 J/K, NA = 6.022 × 1023 molecules/mol.)
A) 560 B) 790 C) 390 D) 21 E) 97
Even relatively small astronomical telescopes are ordinarily not used for terrestrial observation because
a. their images are too bright. b. their images are too dim. c. their images are inverted. d. their images are not in color.
Kinetic Energy: How fast must a 6.0-kg cat run to have a kinetic energy of 150 J?
Fill in the blank(s) with the appropriate word(s).
A container having a volume of 1.0 m3 holds 5.0 moles of helium gas at 50°C. If the helium behaves like an ideal gas, the average kinetic energy per molecule is
a. 6.7 × 10^?20 J. b. 1.0 × 10^?21 J. c. 1.0 × 10^?20 J. d. 6.7 × 10^?21 J. e. 1.3 × 10^?20 J.