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Problem Estimate the mass of a 197 Au ^{197}\text{Au} 197 Au nucleus using R 0 = 1.2 × 10 − 15 m R_0 = 1.2 \times 10^{-15}\,\text{m} R 0 = 1.2 × 1 0 − 15 m and nuclear density ρ = 2.3 × 10 17 kg m − 3 \rho = 2.3 \times 10^{17}\,\text{kg}\,\text{m}^{-3} ρ = 2.3 × 1 0 17 kg m − 3 .
a) 4.6 × 10 − 24 kg 4.6 \times 10^{-24}\,\text{kg} 4.6 × 1 0 − 24 kg
b) 7.9 × 10 − 26 kg 7.9 \times 10^{-26}\,\text{kg} 7.9 × 1 0 − 26 kg
c) 3.3 × 10 − 25 kg 3.3 \times 10^{-25}\,\text{kg} 3.3 × 1 0 − 25 kg
d) 3.3 × 10 − 28 kg 3.3 \times 10^{-28}\,\text{kg} 3.3 × 1 0 − 28 kg
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