Which of the following particles is made of two smaller particles?
a. electron
c. photon
b. proton
d. None of these choices.
D
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The orbital period of a geosynchronous satellite is
A) the same as Earth's precise rotation period. B) the same as the Moon's precise orbital period around Earth. C) the same as Earth's orbital period around the Sun. D) about 12 years. E) about 26,000 years.
What is the primary physical law responsible for the heating of the solar nebula as it collapsed?
a. conservation of energy b. conservation of momentum c. conservation of angular momentum d. Kepler’s third law
If a binary is detected by periodic shifts in its spectral lines, it is a(n) ________ binary
Fill in the blank(s) with correct word
The energy difference between the upper and lower levels in a certain laser is 1.9593 eV. What is the wavelength of the light emitted by the laser?