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.

Diamond will scratch quartz. true or false

At 20∘c, the hole in an aluminum ring is 2.800 cm in diameter. you need to slip this ring over a steel shaft that has a room-temperature diameter of 2.804 cm . 1. to what common temperature should the ring and the shaft be heated so that the ring will just fit onto the shaft? coefficients of linear thermal expansion of steel and aluminum are 12×10−6 k−1 and23×10−6 k−1 respectively.

Which of these metals are magnetic?