The answer would be 21.6 but rounded up it would be 22J.
One part of a freely swinging magnet always points to the Earth's magnetic pole in the Northern Hemisphere.
Answer:
Computer Model May Help to More Accurately Predict Volcano Eruptions. Scientists at the GFZ German Research Center in Potsdam, Germany, have developed a computer model which they say boosts the accuracy of volcanic eruption prediction.
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The molecules making up object collide with the molecules of the other and some of the kinetic energy from a warmer object is transferred to the cooler one.
