Wood is a bad conductor of heat. The drilling process involve heat generation between the drill and the wooden material that can not be dissipated away easily. With deep drilling the drill may get so hot that the chips come out in a state of smoking coal.<span>
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Answer:
those who are attracted to magnets. ex: iron, cobalt and nickel
Explanation:
by finding the distance between two successful crest
You would use distance an time formula to mathmaticly solve