Question

Hard one coming!

In the decomposition of Th-90, the mass defect = 4.50 x 10-24 kilograms. If all of this mass is converted to energy, what would be the value in joules? (1 J = 1 kg m2/s2)

4.05 x 10-7 J

1.50 x 10-8 J

1.35 x 10-16 J

5.4 x 10-32 J

Answer 1

@Kevin @Will.H @kittiwitti1

Answer 2

http://openstudy.com/updates/518d42e4e4b062a8d1da1715
They say it is A

Answer 3

I think so but, does @Kevin agree?

Answer 4

A

Answer 5

Okay, good again!
ALL AGREES!

Answer 6

E = m x c^2
E = 4.50*10^-12 * (3 * 108 m/s2)^2

Answer 7

just use E=mc^2

Answer 8

Yeah