Question

the problem is thermodynamics, the pressure

Examine the system in Figure P1-85. If a change of 0.7 kPa in the air pressure causes the interface between brine and mercury to drop 5 mm in the right column, while the pressure in the brine tube remains constant, determine the ratio A2 / A1

Can you help me solve it with all the details? without skipping steps please and with explanation and please when you write, write big please because sometimes I can not understand the letters

Drawing of the problem: https://plus.google.com/photos/115413650822843498915/album/6534010361235687041/6534010368327440130?

Answer 1