A flask half filled with water is on a weighing scale. If you float a piece of wood in it, the scale reading will be
A) less.
B) the same.
C) greater.
Answer: C
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An empty floating boat interacts gravitationally with the earth. A different interaction with something else keeps the boat from responding to the gravitational interaction by sinking. What is the other object that interacts with the boat?
A. The water B. The atmosphere C. The earth D. The lake floor E. Other (specify)
The __________ of the sun is not visible during a total solar eclipse
Fill in the blank(s) with correct word
If the mass of an object were doubled while its volume remained the same, its density would
A) be half. B) double. C) stay the same. D) be four times as great.
When waves from a pair of closely-spaced slits arrive out of phase
A) a bright fringe is produced. B) a dark fringe is produced. C) both bright and dark fringes are produced. D) none of the above