Question

At what depth of water can an air bubble float? At normal pressure and temperature the density of air is 0.001293 g / cm³ and the atmospheric pressure is equal to 76 cm mercury​

Answer 1

NANBA..

Excess pressure inside the soap bubble is 20 Pa;

Pressure inside the air bubble is

Soap bubble is of radius,r= 5.00 mm = 5 × 103m

Surface tension of the soap solution,S= 2.50 × 102Nm1

Relative density of the soap solution = 1.20

∴Density of the soap solution,ρ= 1.2 × 103kg/m3

Air bubble formed at a depth,h= 40 cm = 0.4 m

Radius of the air bubble,r= 5 mm = 5 × 103m

1 atmospheric pressure = 1.01 × 105Pa

Acceleration due to gravity, g = 9.8 m/s2

Hence, the excess pressure inside the soap bubble is given by the relation:

Therefore, the excess pressure inside the soap bubble is 20 Pa.

The excess pressure inside the air bubble is given by the relation:

Therefore, the excess pressure inside the air bubble is 10 Pa.

At a depth of 0.4 m, the total pressure inside the air bubble

= Atmospheric pressure +hρg +P

Therefore, the pressure inside the air bubble is..

Hope usefull...

Answer 2

Answer:

7.98 km is the right answer

hope it helps you