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How much energy is released when 17 kilograms of granite is cooled from 45°C to 21°C?
Mr. Jones leaves the John Hancock Building in Boston at 8 am,flies to New York City(arriving at 11 am), takes a cab to the UN building, and attends ameeting there until 6 pm. Mrs.Smith leaves the UN Building at 8 am,takes a train to Boston (arriving at 3 pm due to mechanicaldifficulties), and visits the USS Constitution before meeting withher insurance broker in the John Hancock Building from 5:30 pm to7:00 pm. Compare the displacements of Mr. Jones and Mrs. Smithbetween 8 am and 6 pm.(Is it just Îrjones=-Îrsmith?) please explain.
According to coulomb's law, which pair of charged particles has the lowest potential energy?
a. A potential with a 1- charge separated by 150 pm from a particle with a 2+ charge.
b. A particle with a 1- charge separated by 150 pm from a particle with a 1+ charge.
c. A particle with a 1- charge separated by 100 pm from a particle with a 3+ charge.