3. A at metal washer {a Circular plate with a circular hole cut out of it) is heated. Does the hole get smaller. larger. or
3. A at metal washer {a Circular plate with a circular hole cut out of it) is heated. Does the hole get smaller. larger. or remain the same size? Explain. 7. Why must the increase in length. AL. be measured 50 accurately while the length of the rod, Lo can be measured with a meter stick
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