What is the pressure inside a liquid drop?
Excess pressure inside a liquid drop =$\dfrac{2S}{r}$, where S is the surface tension of the liquid and r is the radius of drop. Hence the pressure inside the drop of the mercury is $1.0131\times 10^{5}\;Pa$ and the excess pressure inside the drop is 310 Pa.
Is the pressure inside a bubble of water greater or less than that of a droplet of water?
Find the pressure difference between the inside and outside of the droplet. Thus, the bubble would have twice the force due to surface tension, and so the pressure inside the bubble would have to be twice as large to counteract this larger force. In fact, however, the bubble has twice the radius compared to the drop.
What is the pressure difference between inside and outside of a droplet of water formula?
The pressure increase from the free surface can be calculated with the formula for the weight of the water column divided by the cross sectional area, that is d*g*h, where d = 1 000 kg/m^3 is water density, g = 9.8 m/s^2 is gravity and h = 15 m is the depth. Then you get 147 000 Pa = 147 kPa = 1.47 bar.
Why is the pressure inside a water bubble higher than outside?
As you go deeper in the water, the pressure increases. Then, at whatever depth the bubble is, there is an increase going inside the bubble from outside. So the pressure in the bubble is greater than atmospheric pressure. The smaller the bubble, the greater the pressure inside.
Why do big bubbles have less of pressure?
so the pressure of the air inside the bubble is higher than the outside air pressure if the bubble is below the surface. As it rises in the water, the bubble expands because there is less and less water above it so less and less of the total pressure it feels is from the water.
What is inside an air bubble?
The air inside the bubble is at a greater pressure than the outside pressure of water+air pressure on the surface of water. The pressure difference is where is the surface tension of the liquid.
Are bubbles gas or liquid?
A bubble is a gas pocket in some other substance which could be either a liquid or a solid. Usually when we think of bubbles what comes to mind is spherical film of liquid filled with air, as in a soap bubble.
Why does old water get bubbles?
Atmospheric gases such as nitrogen and oxygen can dissolve in water. When you draw a glass of cold water from your faucet and allow it to warm to room temperature, nitrogen and oxygen slowly come out of solution, with tiny bubbles forming and coalescing at sites of microscopic imperfections on the glass.
Is it OK to drink water left overnight?
You should avoid drinking water left open for a very long time. The water left overnight or for a long period of time in an open glass or container is home to numerous bacterias and is not safe for drinking. You never know how much dust, debris, and other small microscopic particles might have passed into that glass.