Which of the three processes of heat flow is most effective for: a. A hot body in vacuum, e. g. a star like the the sun in space
b. A hot liquid , e. g. the liquid outer iron-nickel core of the Earth
c. A hot solid, e. g. the solid inner iron-nickel core of the Earth

electrical potential energy =0.072 j

explanation:

electrical potential energy is given by

u= q δv

q= charge=6 c

δv= potential difference and is given by

δv= e d

e= electric field

d= distance=5 mm=0.005 m

δv=2.4 (0.005)=0.012 v

now electric potential energy= u= q δv

u=6 (0.012)

u=0.072 j