A hot object is placed in contact with a cold object. We observe that heat flows spontaneously from the hot object to the cold object, but not in the other direction. According to the argument in this chapter, this is so because
A. this increases the entropies of both objects.
B. this decreases the entropy of the combined system.
C. the system will tend to evolve toward macropartitions that have more microstates.
D. A and C
E. B and C
C. the system will tend to evolve toward macropartitions that have more microstates.
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Due to the presence of ice crystals in nearly frozen liquid water, the density of water is
A) lower. B) unaffected. C) higher.
Suppose that the build-up of fatty tissue on the wall of an artery decreased the radius by 10%. By how much would the pressure provided by the heart have to be increased to maintain a constant blood flow?
What will be an ideal response?
The electron was discovered in 1897 by the English physicist J. J. Thomson
Indicate whether the statement is true or false
An object is being acted upon by three forces and moves with a constant velocity. One force is 60 N along the x-axis, the second is 75 N along the y-axis. What is the direction of the third force, measured counterclockwise from the x-axis?
A) 128° B) 182° C) 213° D) 225° E) 231°