Physics 5054 · O Level · Pressure

Pressure — practice question

Fig. 2.1 depicts a can of compressed air being used to remove dust from a computer keyboard.
(a(i))[1]

State the meaning of pressure.

(a(ii))[3]

Explain, in terms of molecules, why the pressure of the air inside the can falls as it is used.

(b)[2]

Find the initial pressure of the air in the can.

Worked solution & mark scheme

This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: Pressure is force / area

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