A certain pressure difference is measured first with a mercury manometer and then…
PHYSICS · Single correct · AP · Physics 1: Algebra-based · Fluids · Fluids
Problem
A certain pressure difference is measured first with a mercury manometer and then with an alcohol manometer (density of alcohol is smaller than that of mercury). How will the column height reading change when mercury is replaced by alcohol, keeping the same pressure difference?
(a) The height will decrease in direct proportion to the density.
(b) The height will increase in inverse square–root proportion to the density.
(c) The height will increase in inverse proportion to the density.
(d) The height will decrease to about 6% of the mercury height.