Physics

Problem

In the expression

p + \dfrac{1}{2}\rho v^{\,n} + \rho g h = \text{constant}

p

is pressure,

\rho

is density,

v

is speed,

g

is acceleration due to gravity, and

h

is height. For the equation to be dimensionally valid, the exponent

n

must be a) 1 b) 4 c) 2 d) 3