On the H-R diagram, a star's position on the main sequence depends on the star's ________
Fill in the blank(s) with correct word
mass
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First Law of Thermodynamics: A compression, at a constant pressure of 140 kPa, is performed on 4.0 moles of an ideal monatomic gas for which CV = 3/2 R. The compression reduces the volume of the gas from 0.26 m3 to 0.12 m3. What is the change in the internal (thermal) energy of the gas during this process? (R = 8.31 J/mol ? K)
A. -29 kJ B. -49 kJ C. 29 kJ D. 49 kJ E. 0 kJ
In the context of Earth's climate history, what do we mean by snowball Earth?
A) This term is used to describe all the ice ages that have occurred in the past few million years. B) It refers to a time when polar regions had much more snowfall than normal. C) It is what we expect to see happen on Earth in about a billion years. D) It refers to a very deep ice age that occurred hundreds of millions of years ago.
In a given LC resonant circuit,
A) the stored electric field energy is greater than the stored magnetic field energy. B) the stored electric field energy is less than the stored magnetic field energy. C) the stored electric field energy is equal to the stored magnetic field energy. D) all of the given answers are possible.
Which of the following is not an abbreviation for a quark flavor?
A. u B. s C. b D. t E. r