What is the upper limit to the mass of a white dwarf?
A) There is no upper limit.
B) There is an upper limit, but we do not yet know what it is.
C) 2 solar masses
D) 1.4 solar masses
E) 1 solar mass
D
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Stage II creep in metals begins when the strain-hardening rate is equal to the rate of _________.
Fill in the blank(s) with the appropriate word(s).
A Carnot engine operating between a reservoir of liquid mercury at its melting point (233 K) and a colder reservoir extracts 10.0 J of heat from the mercury and does 8.0 J of work during each cycle. What is the temperature of the colder reservoir?
A) 47 K B) 186 K C) 163 K D) 207 K
Why might increasing the concentration of a set of reactants increase the rate of reaction?
A) You have increased the chances that any two reactant molecules will collide and react. B) You have increased the ratio of reactants to products. C) The concentration of reactants is unrelated to the rate of reaction. D) The rate of reaction depends only on the mass of the atoms and therefore increases as you increase the mass of the reactants. E) none of the above
The ____________________ is a measure of how many times larger the angular size of an object appears through a telescope
Fill in the blank(s) with correct word