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Maths Problem
take this to be true
a=10b
and say i had 20b how do i know how much a i have?
its obvious when the numbers are easy but what method do i actually use when they are not ?
e.g
1eV= 1.6x10^19j
and if i had 3.371x10^19j how much eV do i have?
thanks!!!!!!!!
Supplement from 01/10/2009 08:23pm: is it b(2)/b(1)=a(2)? ie 20b/10b = 2a
asked in physics, maths

 Messerwisser answers: 1 eV= (1.6x10^19) j can be expressed as
1 j=(1/1.6x10^19)eV
but you have (3.371x10^19)j so just multiply the parenthesis to get eV. / reply
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