[Solved] A Carpenter Measures How Flat a Board Is,by Placing a Level
A carpenter measures how flat a board is,by placing a level on the board.The level contains a bubble floating in a fluid in a clear tube.If the bubble floats away from the center of the tube,the board is not level.A level works on a principle similar to that of the:
A) specialized end bulbs.
B) kinesthetic receptors.
C) semicircular canals.
D) basilar membrane.
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