________ Paradox asks "Why is the night sky dark?"
Fill in the blank(s) with correct word
Olbers'
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If the magnification of a mirror is negative, which of the following is correct?
A) The image is upright and the mirror is convex. B) The image is inverted and the mirror is convex. C) The image is inverted and the mirror is concave. D) All of the previous answers can be correct. E) None of the previous answers is correct.
What is the average translational kinetic energy per molecule of an ideal gas at a temperature of 300 K? The Boltzmann constant is 1.38 × 10-23 J/K
A) 1.7 × 10-21 J B) 8.3 × 10-21 J C) 6.2 × 10-21 J D) 2.1 × 10-21 J E) 4.1 × 10-21 J
In the scientific method, what immediately follows a prediction?
A) a hypothesis B) an observation C) a question D) a test
You have had something simmering in a covered pot on the stove and then turn off the heat. Some time later you return to the pot and find that you have trouble lifting the lid. Why?
What will be an ideal response?