An object weighing 307 n in air is immersed in water after, Ask an Expert

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Q. An object weighing 307 N in air is immersed in water after being tied to a string connected to a balance. The scale now reads 270 N. Immersed in oil, the object weighs 282 N. Calculate the density of the object.

Q. A bolt drops from the ceiling of a train car that is accelerating northward at a rate of 1.55 m/s2.
The acceleration of gravity is 9.8 m/s2.

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