Lithium has less binding energy than _____________, thus the neutrons and protons are easier to unbind from the nucleus
a. helium b. nitrogen
c. carbon d. all of the other choices
d
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The average kinetic energy of a nitrogen molecule at room temperature (20°C) is
a. 2 × 10^?21 J. b. 4 × 10^?21 J. c. 6 × 10^?21 J. d. 8 × 10^?21 J. e. 1 × 10^?20 J.
Angular Quantities: The diameter of the Moon is 3.47 × 106 m, and it subtends an angle of 0.00904 rad when viewed from the surface of Earth. How far is the Moon from Earth?
Fill in the blank(s) with the appropriate word(s).
An object that is positively charged will
a. repel a rubber rod stroked with fur. b. repel a glass rod stroked with silk. c. be polarized. d. none of these
The date is September 21 and the Moon is at full
phase. An observer who sees this moon on her overhead meridian at this time a) sees the Sun setting. b) sees the Sun rising. c) cannot see the Sun. d) sees the Sun overhead.