What is meant by spectral resolution?
A) It is a measure of how much energy an object emits in different parts of the electromagnetic spectrum.
B) It is a measure of how close two spectral lines can be and still be distinguishable.
C) It is a measure of how close two stars can be in the sky and still be distinguishable.
D) It is the same as angular resolution but applied to telescopes operating at different wavelengths.
B) It is a measure of how close two spectral lines can be and still be distinguishable.
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The SI units of acceleration are
a. mi/h. b. km/h. c. m/s. d. m/s2. e. none of the above
A jumbo jet has a mass of 100,000 kg. The thrust for each of its four engines is 50,000 N. What is the jet's acceleration when taking off?
A) 0.25 m/s2 B) 1 m/s2 C) 2 m/s2 D) 4 m/s2 E) none of the above
Mars currently lacks surface habitability mostly because of
A) the chemical composition of its atmosphere B) its distance from the Sun C) its small size D) the chemical composition of its surface
There is a superforce that separates into the electromagnetic, weak, and strong nuclear forces below a critical temperature
Indicate whether the statement is true or false