Aglass flask whose volume is 1000 cm3 at a temperature of 0.300 ∘c is completely filled with mercury at the same temperature. when the flask and mercury are warmed together to a temperature of 52.0 ∘c , a volume of 8.25 cm3 of mercury overflows the flask.

Explanation:

Given

initial volume

initial Temperature

Final Temperature

Volume of overflow of mercury

We know volume expansion of Mercury

Volume Expansion of Mercury

therefore volume Expansion of flask

Volume Expansion of Glass

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