Consider a horizontal pipe line of 50 cm2 cross-sectional area that carries a fluid of unknown density at a speed of 3.0 m/s. This pipe feeds a smaller pipe of cross section 25 cm2. If the pressure difference between the two sections of pipe is 9000 Pa, find the density of the fluid.

where are the vectors ?

gpe = mass x gravity constant x height or… gpe = mgh

where… mass: measured in kilograms (kg)

gravity: gravity constant on earth = 10.00 m/s2

height: measured in meters (m)

gpe: measured in joules (j) or kilojoules (kj)

how do you solve gpe?

gravitational potential energy (gpe) is the energy an object has because of its position above the. ground.

gpe = mass x gravity constant x height or… gpe = mgh.

mass:

note: to earn full marks when solving science word problems, you must show your work:

formula.

example:

given values:

mass = 0.3 kg.