A horizontal pipe of diameter 0.996 m has a smooth constriction to a section of diameter

0.5976 m . The density of oil flowing in the

pipe is 821 kg/m3

.

If the pressure in the pipe is 7570 N/m2

and in the constricted section is 5677.5 N/m2

,

what is the rate at which oil is flowing?

Answer in units of m3

/s.

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.