How does a white dwarf compare to a main-sequence star of the same mass?
A) The white dwarf has higher surface temperature and higher luminosity.
B) The white dwarf has higher luminosity but lower surface temperature.
C) The white dwarf has lower surface temperature and lower luminosity.
D) The white dwarf has lower luminosity but higher surface temperature.
E) The white dwarf and main-sequence star have the same mass and therefore have the same surface temperature and luminosity.
D) The white dwarf has lower luminosity but higher surface temperature.
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Stars in the Galactic disk came billions of years before stars in the Galactic halo
Indicate whether the statement is true or false
First Law of Thermodynamics: The figure shows a pV diagram for a gas going through a cycle from A to B to C and back to A. From point A to point B, the gas absorbs 50 J of heat and finds its internal (thermal) energy has increased by 20 J. Going from B to C, the internal (thermal) energy decreases by 5.0 J.(a) How much work was done by the gas from A to B?(b) How much heat was absorbed by the gas from B to C?(c) How much work was done by the gas going from B to C?
What will be an ideal response?
The planet with the largest volcano in the solar system is
a. Earth. b. Mars. c. Venus. d. Mercury.
A 5.3 L flask of ideal neon gas (which is monatomic) is at a pressure of 6.0 atm and a temperature of 290k The atomic mass of neon is 20.2 g/mol
What is the mass of the neon gas in the flask. (R = 8.31 J/mol ? K, 1 atm = 101 kPa, NA = 6.022 × 1023 molecules/mol) A) 2.7 × 10-2 B) 1.6 × 10-2 C) 1.3 × 101 D) 2.7 × 101 E) 2.7 × 103