The ____________________ of a telescope is determined by the size of the primary lens or mirror
Fill in the blank(s) with correct word
light-gathering power
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The Hertzsprung-Russell diagram can be labeled many different ways. Which coordinates CANNOT be used on an H-R diagram?
a. luminosity versus spectral type b. luminosity versus temperature c. radius versus temperature d. absolute magnitude versus temperature e. luminosity versus color
The Sun will one day pass through the instability strip and become a variable star
a. True b. False Indicate whether the statement is true or false
So which is closer?
A: Menkent B: Hadar C: Can't tell
One end of a copper rod is in thermal contact with a hot reservoir at T = 500 K and the other end is in thermal contact with a cooler reservoir at T = 300 K. Find the entropy change of each reservoir, and the total entropy change, when 8000 J of heat energy are conducted from one end of the rod to the other with no change in the temperature distribution in the rod.
What will be an ideal response?