Assume a gram of a substance marketed as Pure Energy is annihilated by a gram of a second substance Anti-Pure Energy. How long would the energy released power a city which uses 109 watts of power?
a. 40 hrs
b. 25 hrs
c. 50 hrs
d. 65 hrs
e. 50 000 hrs
Question 2
Energy is released during a nuclear reaction due to a conversion between mass and energy. Mass is not conserved. The initial and final amounts are different. If a total of 1.0 gram of mass is missing, how much energy has been released?
a. 9.0 1011 J
b. 9.0 1017 J
c. 9.0 1015 J
d. 9.0 1013 J
e. 9.0 1016 J