The gravitational field simulated by rotation in a space habitat that is best suited for humans is
A) zero.
B) g.
C) one-quarter g.
D) one-half g.
E) three-quarters g.
Answer: B
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The atoms in a nickel crystal vibrate as harmonic oscillators with an angular frequency of 2.3 × 1013 rad/s. The mass of a nickel atom is 9.75 × 10-26 kg
What is the difference in energy between adjacent vibrational energy levels of nickel? (h = 6.626 × 10-34 J ? s, h = 1.055 × 10-34 J ? s, 1 eV = 1.60 × 10-19 J) A) 0.015 eV B) 0.019 eV C) 0.023 eV D) 0.027 eV E) 0.031 eV
A certain CD-ROM disk can store approximately 6.0 × 102 megabytes of information, where 106 bytes = 1 megabyte. If an average word requires 9.0 bytes of storage, how many words can be stored on one disk?
A) 6.7 × 107 words B) 5.4 × 109 words C) 2.1 × 107 words D) 2.0 × 109 words
Greenhouse gases in our atmosphere trap just enough heat to keep the Earth's oceans liquid
Indicate whether the statement is true or false
The difference between the pressures inside and outside a tire is called __________
Fill in the blank(s) with correct word