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What can pressure be when pushing down equals the pressure pushing up?
Wiki User
∙ 10y ago
The pressure is balanced but not blank. There is still pressure on both side doing on to the wall.
Wiki User
∙ 11y ago
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What pushes up if gravity pushes down?
Gravity pulls "down" and the opposite force is provided by whatever is beneath the object.
What happens when you drink through a straw?
This question points up some key misconceptions about what a vacuum is.So you put a straw in your cup of water. If you look down the straw or could look through it, you would see that the level of water inside and outside the straw are exactly the same. This is because the atmosphere is pushing down on the water inside the straw, and it is pushing down equally hard on the water outside the straw. So the pressures are equal.When you suck on the straw, you are decreasing the pressure in your mouth and lowering the pressure of the air in the top of the straw. When that happens, the force of the atmosphere pushing on the water in the glass is higher than the force of gas inside the straw. The atmosphere forces the liquid up the straw into your mouth. So, in essence, you ARE NOT sucking the liquid into your mouth, the atmosphere is pushing it there.This is easily proved by an experiment. Try drinking water from a straw that is more than 20 meters tall. It won't work. At around 20 meters, the massive column of water inside the straw would be pulled down by gravity, with a force greater than the upward force caused by the atmosphere. Even if you completely evacuate the straw with a high-powered pump the water won't make it up the straw. This is why you can't pump water out of a well that is more than 20 meters deep in the ground. Anything deeper than that and you need to use a compressor to pump air at high pressure down into the well, to force the water out (essentially make the upward pressure higher than the atmosphere alone provides), or revert to the tried and true method using buckets.Of course, a similar principle applies with underground or artesian wells. The water there is already under greater pressure and will flow to the surface if given a path.
How do air molecules produce pressure?
Each molecule bounces off an object pushing a little bit of force on that object. These add up to create the overall force. How_does_the_movement_of_air_molecules_cause_air_pressurethousands of baseballs hitting a moving wall the balls will push the wall. This is basically a scaled up version of a demonstration of how pressure works.Read more: How_does_the_movement_of_air_molecules_cause_air_pressure
I Need to know what happens when a pram is moving i need to 1Know when pram is speeding up and slowing down and what forces affect wheels 2When pram is speeding up normal slowing down?
The main forces acting on the pram will be the force the person pushing the pram exerts on it, the friction against the ground and air resistance. When the pram is speeding up the force the pusher exerts will be larger than the combined force of the air resistance and the friction against the ground. When the pram is moving at a constant speed the forces acting on it will be balanced I.e. pushing force= air resistance+friction. When the pram is slowing down the air resistance and the friction will be greater than the pushing force.
What force is drinking out of straw?
It is all to do with air pressure. We lower the air pressure inside the straw by sucking the air out of it, atmospheric pressure which is pushing down on the surface of the drink literally forces it up the straw into our mouth.
If the pressure of the gas pushing down on the liquid is 100 mmHg what will be the pressure of the dissolved gas molecules pushing up out of solution?
100
What doez floating on air mean?
It means that the pressure pushing you up is greater than the pressure pulling you down.
Why does air pressure not crush objects such as your desk?
Answerthe reason is that the molecules in air push in all directions down,up, and sideways. The air pushing down on top of your desk is balanced by the air pushing up on the bottom of your desk.
Why does pressure go up when you go down?
Pressure depends mainly upon the weight of fluids (like air or water) that is above you, being pulled downward by gravity. When you go up, there is less fluid above you and less pressure; when you go down, there is more fluid above you pushing down and more pressure.
What makes hydrolics work?
hydrolics work on high pressure fluid pushing pistons up or down. a hydrolic arm that goes up will probably work on a lever with the arm on one side and the piston on the other side that goes down, and the piston is powered by pressurized fluid pushing the piston down.
Why does an egg break when it drops on the floor?
That has got to do with the light shell of the egg and the pressure inside of the yolk moving downward. The pressure is then forced upwards from the floor and the shell can't cope. It has the floor pushing up and the yolk pushing down with gravity. The shell isn't made to support that kind of pressure and cracks.
How much air pressure is pushing up against your bodies?
15 lbs of air pressure
What is atmospheric air?
Pressure caused by the atmoshere pushing down.it also deceases as you get higher up in elevation... Pressure caused by the atmoshere pushing down.it also deceases as you get higher up in elevation...
What are the forces acting on sitting still?
The chair in pushing you up and the gravity pushing you down
What causes low pressure?
cold air from the south pushing up
What is The balance between the forces pushing the crust down and the forces pushing it up called?
Convergence
What is an non example of air pressure?
no pressure
