Main sequence stars are fusing hydrogen into helium in their cores.
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A star’s color index is a quick way of determining its
A star’s color index is a quick way of determining its
The absolute magnitude scale is defined so that a difference…
The absolute magnitude scale is defined so that a difference of five magnitudes is a luminosity difference of ___________.
A star is 10 parsecs from Earth. Which statement is true?
A star is 10 parsecs from Earth. Which statement is true?
The stars with masses comparable to our Sun’s, but sizes lik…
The stars with masses comparable to our Sun’s, but sizes like the earth are:
Rigel has an apparent magnitude of +0.18 and Betelgeuse an a…
Rigel has an apparent magnitude of +0.18 and Betelgeuse an apparent magnitude of +0.45. What can you conclude from this?
Only type O stars are hot enough to show ionized __________…
Only type O stars are hot enough to show ionized __________ in their spectra.
Almost all properties of other stars are described relative…
Almost all properties of other stars are described relative to our Sun.
Two stars both have parallaxes of .023″, but star A has appa…
Two stars both have parallaxes of .023″, but star A has apparent magnitude +2.3, while star B is magnitude +7.3. Which statement is true?
You are the nurse practitioner at an occupational health cen…
You are the nurse practitioner at an occupational health center at a factory. One of the factory workers just burned his arm on a hot engine (see photo). The epidermis is red and painful. You note that the burn is moist and appears to only involve the epidermis and upper layer of the dermis. He hasn’t had any intervention since this burn occurred about 5 minutes ago. Which of the following would be a part of your treatment plan? (select all which apply)