The excited state of a certain atom is 3.2 eV ± 0.21 eV. (a) What is the average lifetime of this state? (b) If the excited energy doubled (6.4 eV ± 0.21 eV) how would the lifetime be affected?
What will be an ideal response?
(a) 1.6 fs
(b) unchanged, uncertainty still ± 0.21 eV
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Thin Films: Light has wavelength 600 nm in a vacuum. It passes into glass, which has an index of refraction of 1.5. What is the frequency of the light inside the glass? (c = 3.0 × 108 m/s)
A. 3.3 × 1014 Hz B. 5.0 × 1014 Hz C. 3.3 × 105 Hz D. 5.0 × 105 Hz
The quantum mechanical model of the hydrogen atom requires that if the orbital quantum number of the hydrogen atom is 3, there will be how many permitted orbital magnetic quantum numbers?
a. three c. four b. nine d. seven
The Moon's angular diameter in our sky as observed from Earth is measured to be 0.5°. From this, we can find the diameter of the Moon in kilometers if we also know the Moon's
a. distance from the Earth. b. element composition c. distance from the Sun.
What two pieces of information are needed to determine the diameter of a faraway object? Explain how that information is used to determine the diameter
What will be an ideal response?