1 Explain why a the metal lid on a glass jam jar can be unscrewed easilyif the jar is inverted for a few seconds with the lid in very hot water,

If we assume it is your average glass pickle-jar with a metal top than heating up the jar will loosen the lid because the metal conducts more heat than the glass. ... As the lid loosens the normal force the glass produces to push back on the lid is decreased so the Frictional force is lowered.

Explanation:

read the sentence below and answer the question that follows. one of the norms in the village was to meet at the town square on fridays for a community dinner and dance. the underlined word in the sentence above is best defined as a a. cultural element shared by all people around the world b. specific area in a town used for traditional community events c. religious custom accepted and practiced by all members of a village d. behavioral pattern that is regularly accepted by a group of people