Question

convert 5 joule into erg using dimensional analysis ​

Answer 1

$\huge\underline\bold\red{Answer:-}$

U must know the dimension of Joule then,

it is:

[M] [L]^2 [T]^-2

then,

1 J  = 1000 × 10000 × 1 gmcm^2/s^2 = 10^7 ergs

as for erg the unit is: gcm^2/s^2.

for 5 J  $\implies$ $5 \: \times \: {10}^{7}$ergs.