Question

Everybody knows e=mc2 But what are the units? Is e in ergs, btu, horsepower, etc. Is m in gms, tons, lbs, etc? Is c in km/sec, mph, inches/day, etc?

Asked by: Donald Hobbs

Answer

All the parameters are in SI units. e.g: e (in Joules), m (Kilograms) and c (meters/second). However you can convert into your favourite units, taking into account the proper relations in between.

Answered by: Buddhadev Mukherjee, Research Scholar,Nuclear Science Center, India

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Science Quote

'As far as the laws of mathematics refer to reality, they are not certain; and as far as they are certain, they do not refer to reality.'

Albert Einstein
(1879-1955)