Question

Assume that the pressure inside of the 1 liter balloon is 200,000 Pa, what is the explosive energy in the inside the balloon? Express your answer in joules and pounds of TNT (2.1 x 106 J = 1 lb of TNT).

Answer 1

Answer:

200 Joules is the explosive energy in the inside the balloon. And that is  $9.523\times 10^{-5}$1 lb of TNT.

Explanation:

$Pressure=\frac{force}{Area}=\frac{Force\times distance}{Area \times distance}=\frac{Energy}{Volume}$

Volume of the balloon = V = 1 L = $0.001 m^3$

Pressure inside the balloon ,P= 200,000 Pa =$200,000 N/m^2$

Explosive energy in the inside the balloon be E.

E = Pressure × Volume

$E=200,000 N/m^2\times 0.001 m^3=200 Joules$

1 lb of TNT = $2.1\times 10^6 J$

200 Joules = $200\times \frac{1}{2.1\times 10^6 }$1 lb of TNT

= $9.523\times 10^{-5}$1 lb of TNT