The sky is the deepest blue
A) just before a rainstorm.
B) during a rainstorm.
C) just after a rainstorm.
D) when the air is humid.
E) just before sunset.
Answer: C
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A website's CTA is its call-to-______.
A. advance B. assess C. action D. analyze
A refrigerator uses 40.0 J of work to extract heat from a heat reservoir at 
If the coefficient of performance of the refrigerator is 2.10, then how much heat is discharged out of the refrigerator at a higher temperature?
A. 52.0 J B. 66.0 J C. 86.0 J D. 124 J
Consider two main sequence K-stars of equal mass. Each star has been measured for a periodic wobble in its velocity curve, with one having a period of 1 month and the other having a period of 2 months
Which star has the closest planet (the planet with the smallest orbit)? A) the star with a period of 1 month B) the star with a period of 2 months C) The planet orbit sizes can't be determined from the information provided.
In an isochoric process, the internal (thermal) energy of an ideal gas decreases by 50 J. How much work does the gas do during this process?
A) 0.00 J B) 25 J C) 50 J D) -25 J E) -50 J