Estimate the Mass of a Nucleus with Radius $2.8 \times 10 ^ { - 15 } \mathrm {~m} . \left( 1 \mathrm { u } = 1.6605 \times 10 ^ { - 27 } \mathrm {~kg} \right)$

Multiple Choice

Estimate the mass of a nucleus with radius $2.8 \times 10 ^ { - 15 } \mathrm {~m} . \left( 1 \mathrm { u } = 1.6605 \times 10 ^ { - 27 } \mathrm {~kg} \right)$

A) about $2.1 \times 10 ^ { - 26 } \mathrm {~kg}$
B) about $4.7 \times 10 ^ { - 26 } \mathrm {~kg}$
C) about $2.3 \times 10 ^ { - 26 } \mathrm {~kg}$
D) about $7.5 \times 10 ^ { - 27 } \mathrm {~kg}$