# PHYSICS PROBLEM PLEASE HELP?

I really need this problem solved please

please show me your steps too

I really want to understand how to do this

### 1 Answer

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- WoodsmanLv 76 years agoBest Answer
LHS mass = 4 * 1.00728amu = 4.02912 amu

RHS mass = 4.00150amu + 2 * 0.00055amu = 4.00260 amu

mass defect = LHS - RHS = 0.02652 amu

and mass defect = 0.02652 amu * 1.66054e-27kg/amu = 4.40375e-29 kg

energy E = mc² = 4.40375e-29kg * (3e8m/s)² = 3.96338 pJ

or E = 0.02652amu * 931.5MeV/amu = 24.7 MeV

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