- #1
pavadrin
- 156
- 0
is there a formula which i can use to determine the the velocity of an object propelled by a gas under compression and a fluid?
thanks
Pavadrin
thanks
Pavadrin
Can you clarify? What exactly is the problem you are trying to solve?pavadrin said:is there a formula which i can use to determine the the velocity of an object propelled by a gas under compression and a fluid?
The thrust is given by dp/dt = vdm/dt where dm/dt is the time rate of change of mass of the system.pavadrin said:Im given a conatainer at a set volume, with an amount of water which is given to me, both in volume and mass. I need to work out the amount of thrust which this vessel could expel, exculding the aerodynamics of the vessel.
thanks
Assume that the water covers the hole. What is the speed at which water will be ejected through the hole? (Hint: look up Bernouilli's equation). Then determine the rate at which mass (water) leaves the container. Then just use F = dp/dt = vdm/dt to determine the thrust.pavadrin said:okay the problem is as follows:
In a container with the volume of 1.5L, 500mL of water is introduced, as well as 100psi of air pressure. Calculate the amount of thrust this vessel will be able to provide if the air and water is allowed to escape through a 5mm opening.
thanks Andrew Mason, ill shall look up the suggested equation and then re-post if i encounter more problems.Andrew Mason said:Assume that the water covers the hole. What is the speed at which water will be ejected through the hole? (Hint: look up Bernouilli's equation). Then determine the rate at which mass (water) leaves the container. Then just use F = dp/dt = vdm/dt to determine the thrust.
AM
Air pressure is the force exerted by the weight of air in the atmosphere on a given surface. It is typically measured in units of pressure, such as pounds per square inch (psi) or millibars (mb).
Air pressure can affect water in several ways. One important factor is that air pressure determines the boiling point of water - at higher altitudes where air pressure is lower, water boils at a lower temperature. Air pressure also plays a role in the formation of weather patterns, such as high and low pressure systems, which can impact the movement and behavior of water in the atmosphere.
The formula for calculating air pressure is P = F/A, where P is pressure, F is force, and A is area. This formula is based on the fact that air pressure is the force exerted by the weight of air on a given surface.
Air pressure does not directly affect the density of water. However, changes in air pressure can affect the density of air, which can indirectly impact the density of water. For example, when air pressure decreases, the air becomes less dense and can hold less water vapor, leading to lower humidity levels and potentially drier conditions.
Water pressure increases with depth due to the weight of the water above pushing down on the water below. For every 10 meters of depth, water pressure increases by about 1 atmosphere (14.7 psi). This means that at greater depths, the pressure can become quite high and can have significant impacts on structures and organisms living in the ocean.