Kerosene flows upward through a vertical pipe

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Fluids · Fluids

Problem

Kerosene

(\rho = 800\,\text{kg m}^{-3})

flows upward through a vertical pipe. At point

A

the speed is

1.5\,\text{m s}^{-1}

and the gauge pressure is

3.0\times10^{4}\,\text{Pa}

. Point

B

2.0\,\text{m}

higher and the speed there is

2.5\,\text{m s}^{-1}

. Take

g = 9.8\,\text{m s}^{-2}

. What is the gauge pressure at

B

? (a)

2.8 \times 10^{4}\,\text{Pa}

(b)

4.4 \times 10^{4}\,\text{Pa}

(c)

1.3 \times 10^{4}\,\text{Pa}

(d)

0.84 \times 10^{4}\,\text{Pa}