Mathematics, 10.12.2019 04:31 MendesArmy333
Asquare is cut out of a copper sheet. two straight scratches on the surface of the square intersect forming an angle. the square is heated uniformly. as a result, the angle between the scratches
a) increases
b) decreases
c) stays the same
d) the answer depends on whether θ is an acute or obtuse angle.
Answers: 1
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