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Two blocks are completely submerged in water. Both blocks have the same mass, but different densities.  ...

Two blocks are completely submerged in water. Both blocks have the same mass, but different densities.  
The volume of Block 1 is 0.810 . The volume of Block 2 is 0.340 . The mass of Block 1 is 460.0 kg.
What is the acceleration of Block 2 just after it is released? [Where up is positive.]

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