Fluids and Newton's Laws (Buoyancy)

AP Physics 1· difficulty 4/5

A wood block with ρb=600\rho_b = 600 kg/m3^3 floats in water (ρw=1000\rho_w = 1000 kg/m3^3). What fraction of its volume is submerged?

  • A

    1.671.67

  • B

    0.600.60

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  • C

    0.400.40

  • D

    0.100.10

Explanation

fsub=ρb/ρw=600/1000=0.60f_{sub} = \rho_b/\rho_w = 600/1000 = 0.60.

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