A Common Trick to Open the Lid of a Jar $\circ$

question 45

Multiple Choice

A common trick to open the lid of a jar that is stuck is to put the lid under hot running water. Suppose the diameter of the lid of a jar of strawberry jam is 6 cm, by how much does the circumference change if the temperature is increased by 30 ^$\circ$ C? Assume the lid is made of steel.

• A) 2.0\(\times\) 10 ^-3 cm
• B) 3.1\(\times\) 10 ^-3 cm
• C) 4.1\(\times\) 10 ^-3 cm
• D) 6.2\(\times\) 10 ^-3 cm
• E) 5.2\(\times\) 10 ^-3 cm

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