How can a star's blackbody spectrum be used to determine the temperature of a star?
What will be an ideal response?
Careful analysis of the blackbody curve of the star's entire radiation spectrum will reveal a peak that is unique to a given photospheric temperature. Basically, the bluer the star's radiation, the hotter its surface will be.
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____________________ can be used to determine the distance to a star when the spectrum of the star can be used to determine its spectral type and luminosity class
Fill in the blank(s) with correct word
Heat is added to an ideal gas and the gas expands. In such a process the temperature
A. will remain the same if the work done equals the heat added. B. must always decrease. C. will remain the same if the work done is less than the heat added. D. must always increase. E. will remain the same if the work done exceeds the heat added.
A mass of 385 g hangs from one end of a string that goes over a pulley with a moment of inertia of 0.0125 kg?m2 and a radius of 15.0 cm. A mass of 710 g hangs from the other end
When the masses are released, the larger mass accelerates downward, the lighter mass accelerates upward, and the pulley turns without the string slipping on the pulley. What is the tension in the string on the side of the 710-g mass? A) 9.77 N B) 6.87 N C) 5.59 N D) 4.41 N E) 3.68 N
The time interval during which a nucleus has a 50% probability of decaying is its half life
Indicate whether the statement is true or false