College Physics with MasteringPhysics 7th Edition by Jerry Wilson,Anthony Buffa,Bo Lou

تمرين 63

In Conceptual Example 9.14, it was explained why a stream of water from a faucet necks down into a smaller cross-sectional area as it descends. Suppose at the top of the stream it has a cross-sectional area of 2.0 cm 2 , and a vertical distance 5.0 cm below the cross-sectional area of the stream is 0.80 cm 2. What is (a) the speed of the water and (b) the flow rate