Component of producer gas and water gas

Water gas is a mixture of hydrogen and carbon monoxide, formed by the reaction of steam with hot carbon

Producer gas is a gas mixture containing carbon monoxide hydrogen, carbon dioxide and nitrogen.

t.                 w               e                 n                   t                 y                 c             h               a           r           a               c                 t             e             r             s        

a charge 3q is at the origin, and a charge −2q is on the positive x axis at x=a. part a where on the x-axis would you place a third charge so it would experience no net electric force? enter an expression for the exact answer, which will involve a square-root sign. (do not enter an approximate decimal answer.)