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Q. Four identical masses of mass 600 mg each are placed at the corners of a square whose side lengths are 15.0cm.What is the magnitude of the net gravitational force on one of the masses, because of the other three?

Q. An aluminum baseball bat has a length of 0.86 m at a temperature of 17 °C. While the temperature of the bat is raised, the bat length after that by 0.000 16 m. Determine the final temperature of the bat.

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