1 kilotonne = how many joules??
1 megatonne = how many joules??
please help, im desperate.
1 kilotonne = how many joules, 1 megatonne = ? joules? helpModerator: convertme.com 
bri wrote:1 kilotonne = how many joules??
1 megatonne = how many joules??
please help, im desperate.

There are three similar units of mass called the ton or tonne:shill wrote:According to this page, one megaton is 4.6 PJ, even though the page that it links to defines it as 4.2 PJ. This is what happens with an anarchic encyclopedia.
EDIT: I think I've figured this out. The specific combustion energy of TNT is 4.6 MJ/kg, plain and simple. The value 4.2 PJ comes from the measurement of 1 000 000 tons of TNT, whereas the value 4.6 PJ comes from the measurement of 1 000 000 tonnes of TNT.
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