In a muggy region, the extra warmth you often feel is mainly due to
A) evaporation.
B) condensation.
C) sublimation.
D) none of the above
Answer: B
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Which is the process that explains how life adapts itself to a changing environment?
a. biological evolution b. environmental duplication c. biological transformation d. natural selection e. genetic reproduction
An upright object is 50 cm from a concave mirror of radius 60 cm. The character of the image is
A) real and upright. B) real and inverted. C) virtual and upright. D) virtual and inverted.
The intrinsic brightness of a star is referred to as its
A) radiance B) luminosity C) surface temperature D) apparent brightness
If it takes 50 J of energy to move 10 C of charge from point A to point B, what is the magnitude of the potential difference between points A and B?
A) 500 V B) 5.0 V C) 50 V D) 0.50 V