The density of the air inside the piston decreases and the air pressure also decreasesThe density of the air inside the piston increases and the air pressure increasesThe density of the air inside the piston remains the same and the pressure decreasesThe density of the air inside the piston remains the same and the pressure increases

Air in a cylinder is suddenly compressed by a piston, which is then maintained at the same position, with the passage of timeA     The pressure decreasesB     The pressure increasesC     The pressure remain constant D     The pressure may increase depending upon the nature of the gas

A given amount of gas is held inside a container.  The volume of the container can be changed using a movable piston.  Which of the following will cause the pressure which the gas exerts on the walls of the container to decrease?Pushing the piston inwards (so that the volume of the container decreases)Heating the gasPulling the piston outwards (so that the volume of the container increases)Pumping more gas into (increasing the number of particles inside) the container

Which of the following is true about the hydraulic system?Group of answer choicesThe pressure exerted on a small piston is equal to that on the larger piston.The pressure exerted on a smaller piston is greater than on the larger piston.The pressure exerted on a larger piston is greater than on the smaller piston.

The air pressure inside a tyre is 200 kPa.  Calculate the force which this air will exert on the inside surface of the tyre if it has a surface area of 0.1 m2.20 N2,000,000 N20,000 N2,000 N2A given amount of gas is held inside a container.  The volume of the container can be changed using a movable piston.  Which of the following will cause the pressure which the gas exerts on the walls of the container to decrease?Pushing the piston inwards (so that the volume of the container decreases)Heating the gasPulling the piston outwards (so that the volume of the container increases)Pumping more gas into (increasing the number of particles inside) the container3A submarine experiences a pressure of 100,000 Pa at the surface of the sea.  Calculate the total pressure which it will experience when it descends to a depth of 100 metres.  The density of seawater is approximately 1,030 kg/m3, and the value of g is 10 N/kg.10,300 Pa1,130,000 Pa1,030,000 Pa110,300 Pa

Which of the following describes how atmospheric pressure (the pressure of the air that makes up our atmosphere) changes with altitude?It increases as altitude increasesIt remains constantWhether it increases, decreases or stays the same depends on local weather conditionsIt decreases as altitude increases