Benm
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I think it must have been a fair bit more than that:
Reported yield was 15 kt of TNT, or about 6E+13 joules. Given the fission energy of 1 kg of U235 is about 1.4E+14 joules per kilogram, the amount that fissioned should have been 400 grams or so. I did these calculations quick and dirty so don't blame me if they are off by a bit, but it's nothing near 'the weight of a dollar bill'.
It is however equivalent to converting something like 1.2 grams of matter to energy, which would be about the weight of a dollar bill.
On the other hand, very little of the uranium actually fissioned: the yield came from less than a kilogram of the uranium, while the whole thing had 64 kg of it.
Reported yield was 15 kt of TNT, or about 6E+13 joules. Given the fission energy of 1 kg of U235 is about 1.4E+14 joules per kilogram, the amount that fissioned should have been 400 grams or so. I did these calculations quick and dirty so don't blame me if they are off by a bit, but it's nothing near 'the weight of a dollar bill'.
It is however equivalent to converting something like 1.2 grams of matter to energy, which would be about the weight of a dollar bill.
On the other hand, very little of the uranium actually fissioned: the yield came from less than a kilogram of the uranium, while the whole thing had 64 kg of it.