The Egg In & Out of Bottle | Air Pressure Experiment | SMART START | Rashika Mam #shorts #ytshorts

Show that air has pressure with the help of an experiment.

Water bottle in a hot car. In the American Southwest, the temperature in a closed car parked in sunlight during the summer can be high enough to burn flesh. Suppose a bottle of water at a refrigerator temperature of 5.00^@ C is opened, then closed, and then left in a closed car with an internal temperature of 65.0^@ C . Neglecting the thermal expansion of the water and the bottle, find the pressure in the air pocket trapped in the bottle. (The pressure can be enough to push the bottle cap past the threads that are intended to keep the bottle closed.)

A glass bottle of soda is sealed with a screw cap . The absolute pressure of the carbon dioxide inside the bottle is 1.80 xx 10^(5) Pa. Assuming that the top and bottom surfaces of the cap each have an area of 4.10 xx 10^(-4) m^(2) , obtain the magnitude of the force that the screw thread exerts on the cap in order to keep it on the bottle . The air pressure outside the bottle is one atmosphere .

A novice scuba diver practicing in a swimming pool takes enough air from his tank to fully expand his lungs before abandoning the tank at depth l. and swimming to the surface , failing to exhale during his ascent . At the surface , the difference Delta p between the external pressure on him and the air pressure in his lungs is 9.3 kPa . From what depth does he start ? What potentially lethal danger does he face ?

Assertion (A): It is it difficult to force the paper ball into the bottle. Reason (R): The air pressure inside the bottle is higher than near the mouth. The air inside the bottle pushes the ball out.

Air is filled in a bottle and it is corked at 35^(@)C . If the cork can come out at 3 atmospheric pressure, then upto what temperature should the bottle be heated to remove the cork ?

(i) An adiabatic cylinder contains an ideal gas. It is fitted with a freely movable insulating piston. In one experiment the piston is pulled out very fast to double the volume of the gas. In another experiment starting from same initial state, the piston is pulled out very slowly to double the volume of the gas. At the end of which experiment the final pressure of the gas will be higher? (ii) An ideal gas is contained in a cylinder fitted with a movable piston. In an experiment ‘A’ the gas is allowed to perform a work W (gt 0) on the surrounding during an isobaric process and thereafter the pressure of the gas is reduced isochorically to half the initial value. At the end of the experiment the temperature of the gas is T_(A) . In a different experiment ‘B’ the pressure of the gas is reduced to half in an isochoric process and then the gas performs a work W on the surrounding during an isobaric process. At the end of the experiment the gas temperature is T_(B) . Which is higher, T_(A) or T_(B) ?