(a)[1]
Define pressure.
(b)[3]
Explain how the air molecules in the syringe cylinder produce pressure.
(c(i))[2]
A $10\,\text{N}$ weight is put on the plunger. The plunger descends slowly so that the air temperature inside the syringe stays constant. Before the weight is put on the plunger: • the air pressure inside the syringe is $1.0\times10^{5}\,\text{Pa}$ • the air volume is $50\,\text{cm}^3$ The plunger has a cross-sectional area of $1.2\times10^{-4}\,\text{m}^2$. Calculate the pressure of the air in the syringe after the plunger stops moving.
(c(ii))[2]
Calculate the air volume inside the syringe once the plunger has finished moving.