Find the difference of air pressure between the inside and outside of a soap bubble 5 mm in diameter, if the surface tension is 1.6 Nm-1

Question

Find the difference of air pressure between the inside and outside of a soap bubble 5 mm in diameter, if the surface tension is 1.6 Nm-1  (A)  2560 Nm-2  (B)  3720 Nm-2  (C)  1208 Nm-2  (D)  10132 Nm-2

Tardigrade Admin · Accepted Answer

P=(4T/R)=(4× 1.6/2.5× 10-3) =2560 N/m2

Q. Find the difference of air pressure between the inside and outside of a soap bubble $5 mm$ in diameter, if the surface tension is $1.6 N m^{- 1}$

$2560 N m^{- 2}$

$3720 N m^{- 2}$

$1208 N m^{- 2}$

$10132 N m^{- 2}$

$P = \frac{4 T}{R} = \frac{4 \times 1.6}{2.5 \times 10 ^{- 3}}$ $= 2560 N / m^{2}$

Q. Find the difference of air pressure between the inside and outside of a soap bubble 5mm in diameter, if the surface tension is 1.6Nm−1

2560Nm−2

3720Nm−2

1208Nm−2

10132Nm−2