An inverted U-tube manometer is used to measure the pressure difference between two pipes A and B, as shown in the figure. Pipe A carries oil (specific gravity = 0.8) and pipe B carries water. The densities of air and water are 1.16 kg/m^3 and 1000 kg/m^3, respectively. The pressure difference between pipes A and B is _______________kPa.
Acceleration due to gravity: g = 10 m/s^2
![](https://static.wixstatic.com/media/1efdb1_2c367e5900cf4518ae45b13a1b6a4055~mv2.png/v1/fill/w_93,h_97,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/1efdb1_2c367e5900cf4518ae45b13a1b6a4055~mv2.png)
Answer:
![inverted utube manometer](https://static.wixstatic.com/media/1efdb1_6b28a3b1ce924c36b0c93cd9c8bdab9d~mv2.png/v1/fill/w_49,h_27,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/1efdb1_6b28a3b1ce924c36b0c93cd9c8bdab9d~mv2.png)
![](https://static.wixstatic.com/media/1efdb1_1af8cbdd4e9542a59704ab658c19254f~mv2.png/v1/fill/w_49,h_22,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/1efdb1_1af8cbdd4e9542a59704ab658c19254f~mv2.png)