A syringe is half filled with air and sealed. The plunger is then pulled outwards…
Physics · IGCSE · Cambridge (CIE) — Thermal physics
A syringe is half filled with air and sealed. The plunger is then pulled outwards, causing the volume of the gas to increase.
This is done slowly, so that the expansion happens at a constant temperature.
What happens to the pressure of the gas, and to the speed of the air molecules?
Pressure inside syringe | Speed of air molecules | |
A | stays the same | stays the same |
B | increases | decreases |
C | decreases | stays the same |
D | decreases | decreases |
A
B
C
D
Answer
(C) C
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