Water is being fired at 20 m/s from a hose of 80 mm diameter into the atmosphere. The water leaves the hose through a nozzle with a diameter of 25 mm at its exit.
Using the combination of continuity, momentum and Bernoulli's equations, find
the pressure just upstream of the nozzle and the force on the nozzle. [10 marks]
1
2
Data: 01 = unknown; d = 0.08m; U2 = 20 m/s; d2 = 0.025m.
​

Zamir and talia raced through a maze. zamir walked 2 m north, 2 m east, 4 m south, 2 m east, 4 m north, 2 m east, 3 m south, 4 m east and 4 m north. talia walked 2 m north, 6 m east, 3 m south, 4 m east, and 4 m north. compare their displacements:

Which statement best explains why an object weight less on mercury than it does on earth

The place you get your hair cut has two nearly parallel mirrors 6.00 m apart. as you sit in the chair, your head is 2.00 m from the nearer mirror. looking toward this mirror, you first see your face and then, farther away, the back of your head. (the mirrors need to be slightly nonparallel for you to be able to see the back of your head, but you can treat them as parallel in this problem.) how far away does the back of your head appear to be?