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If 7.84 × 107 J of energy is released from a fusion reaction, what amount of mass in kilograms would be lost? Recall that c = 3 × 108 m/s.

physics
Guest Jun 24, 2015

Best Answer 

 #1
avatar+26329 
+10

This requires use of that well known equation  E = mc2

 

Rearrange to get m = E/c2

 

m=7.84*107/(3*108)2  kg = (7.84/9)*10-9 kg. ≈ 8.7*10-10 kg

.

Alan  Jun 25, 2015
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1+0 Answers

 #1
avatar+26329 
+10
Best Answer

This requires use of that well known equation  E = mc2

 

Rearrange to get m = E/c2

 

m=7.84*107/(3*108)2  kg = (7.84/9)*10-9 kg. ≈ 8.7*10-10 kg

.

Alan  Jun 25, 2015

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