The magnitude of net gravitational force on one of masses

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Reference no: EM1361412

Q. Four identical masses of mass 900kg each are placed at the corners of a square whose side lengths are 10cm. what is the magnitude of the net gravitational force on one of the masses, due to the other three?

Q. Mr. Physics drops a rock down a 250-meter deep well. Upon impact with the bottom of the well a short burst of sound is produced with a frequency of 250 Hz. How long after he drops the rock does he hear it hit the bottom of the well?

Reference no: EM1361412

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