because of the atmospheric preesure
She played music on glasses filled with water--they have different tones depending on how much water is in there.
A sponge is filled with holes, and yet holds liquid.
The lake is the result of the dirt being dug to create the high banks of the track. Florida has an extremely wet underground, so the hole naturally filled with water.
Water is evaporated from the ground and lakes and condenses into water droplets in the clouds. Then the water is released when it gets heavy enough and falls back to the ground as rain and the cycle starts over again.
All nails not made of galvanized metals or aluminum rust because the wet nails become oxidized then rust forms. Painted nails cannot escape the rusting processes if the paint does not get into every nook and cranny of the nail. Some paint has so much water in its formula the paint itself will rust as the water and air combine. Here is an experiment for you. Drop a nail into a completely filled jar of water then screw down the jar lid. Take another jar and put the nail into it with only half filled and leave the lid off. Which one rusts faster? Construction crews will put caulking around exposed nails to prevent the water and air from rusting the nails.
Water does not run out of a dropper unless the rubber bulb is pressed because when the bulb is squeezed, it creates a vacuum inside the dropper. This vacuum pressure forces the water to be sucked up into the dropper. When the pressure is released by letting go of the bulb, the water remains in the dropper due to the lack of pressure forcing it out.
ink dropper works on the principal of air pressure. when we fill ink inside the dropper we have to press it's bulb(upper,soft rubber portion),because of which the air inside the dropper is removed and low air pressure region is formed. when we dip it in the ink,the space is filled with ink,which remains retained in it unless we press the bulb again.
When a droper is dipped into water and its bulb is pressed air bubbles seems to occur in water because the dropper was filled with air before it was dipped in water and when we press the bulb air comes out forming air bubbles and the space is filled with water .
When a dropper is filled with water and placed in a bottle, it initially sinks to the bottom due to its density. As the dropper fills with water, its overall density decreases, causing it to float back to the top. This change in density allows the dropper to switch between floating and sinking based on the amount of water it holds.
Water doesn't come out because the water cannot be replaced by air when the water is squeezed out. This is because the water would spill out, but air pressure is in the way If the hole at the end of the dropper was bigger, then the water could spill out. That is why the water spills out when you pour a drink for yourself. The water spills out , and at the same time air is spilling into the bottle.
To make a homemade eye dropper, you can sterilize a glass dropper or a clean, empty plastic dropper bottle. Boil the glass dropper in water for 10 minutes or wash the plastic dropper bottle with soap and hot water. Once dry, use it to dispense the desired volumes. Remember to store the dropper in a clean, dry place when not in use.
i think its due to the pressure of water .i am not sure about this
What measurements units would be best to measure the amount of wanter in and eye dropper
For medicine
While the results vary for dropper size and the force you use to squeeze the dropper, you should conclude that water has a high surface tension and the penny held a lot of water.
Fresh water filled.
An average eye dropper can hold around 1 milliliter of liquid, which is equivalent to 20 drops of water.