A pneumatic actuator in an industrial robotic arm contains a fixed mass of argon gas. During a compression stroke, the volume of the gas is reduced while its temperature is kept strictly constant.
The table below shows the pressure P1 P_1\,P1 and volume V1 V_1\,V1 before the compression, and the volume V2 V_2\,V2 after the compression.
| Pressure in kPa\text{kPa}kPa | Volume in m3\text{m}^3m3 | |
|---|---|---|
| Before compression | P1=180P_1 = 180P1=180 | V1=1.5V_1 = 1.5V1=1.5 |
| After compression | P2=P_2 =P2= | V2=0.36V_2 = 0.36V2=0.36 |
Calculate the pressure P2 P_2\,P2 of the argon gas after compression. Use the equation:
P2=P1×V1V2 P_2 = \frac{P_1 \times V_1}{V_2} P2=V2P1×V138 exam-style questions on Edexcel GCSE Physics 14.3 Gas pressure and temperature, covering 14.3.1 Gas pressure and particle motion, 14.3.2 Temperature and pressure at constant volume, 14.3.3 Absolute zero and the kelvin scale, 14.3.4 Compressing and expanding gases, 14.3.5 Volume and pressure at constant temperature, and 14.3.6 Doing work on a gas. Each one has a worked solution and a mark scheme showing where the marks go.