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<strong>Energy</strong> per gram of different materials<br />
calories (or watt-hrs) Joules Compared to TNT<br />
bullet (moving at speed of sound,<br />
1000 ft per second) 0.01 40 J 0.015<br />
battery (flashlight) 0.01 40 J 0.015<br />
battery (computer) 0.1 400 J 0.15<br />
TNT (trinitrotoluene) 0.651 2723 J 1<br />
modern High Explosive (PETN) 1 4200 1.6<br />
chocolate chip cookies 5 21 kJ 8<br />
butter 7 29 kJ 11<br />
Gasoline 10 42 kJ 15<br />
methane gas (CH4) 13 54 kJ 20<br />
hydrogen gas (H2) for fuel cell 26 110 kJ 40<br />
asteroid or meteor (30 km/sec) 107 450 kJ 165<br />
uranium-235 20 million Cal 84 billion J 30 million
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