AP Physics 2hardmcq1 pt
A 4.0 kg cube floats with 75% submerged in water (ρ = 1000 kg/m³, g = 10 m/s²). The cube's volume is about
A.5.3×10⁻³ m³
B.4.0×10⁻³ m³
C.3.0×10⁻³ m³
D.7.5×10⁻³ m³
Explanation
Core Concept
Fb = mg: (1000)(0.75V)(10) = 40, so V = 40/7500 ≈ 5.3×10⁻³ m³.
Correct Answer
A5.3×10⁻³ m³
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