The piston diameters in fig. p1-58e are d1 = 10 cm and d2 = 4 cm. when the pressure in chamber 2 is 2000 kpa and the pressure in chamber 3 is 700 kpa, what is the pressure in chamber 1, in kpa?

Along wire carrying a 4.2 a current perpendicular to the xy-plane intersects the x-axis at x=−1.7cm. a second, parallel wire carrying a 3.0 a current intersects the x-axis at x=+1.7cm. part a at what point on the x-axis is the magnetic field zero if the two currents are in the same direction? express your answer to two significant figures and include the appropriate units.