A piece of wood with a density of 680 kg/m³ is tied with a string to the bottom of a water-filled flask. The wood is completely immersed, and the tension in the string is 113 N.

(a) What is the volume of the wood?

(b) If the string breaks and the wood floats on the surface, does the water level in the flask rise, drop, or stay the same?

(c) Assuming the flask is cylindrical with a cross sectional area of 65 cm², find the change in water level after the string breaks.

 

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