Question

A object of mass 69 kg. Heat energy is given 25 J then find specific latent heat?

Answer 1

$Mass = 69kg$
$Heat Energy = 25 J$
$We know,$
$U = ml$
$(25) = (69)l$
$l = 0.362 J/kg$

Answer 2

mass = 69 Kg
specific latent heat = x [say]

now 
heat energy = mass x specific latent heat
25 = 69 (x)
x = 25/69
x= 0.362

specific latent heat = 0.362 J/Kg