Awater main pipe of diameter 10 cm enters a house 2 m below ground. a smaller diameter pipe carries water to a faucet 5 m above ground, on the second floor. water flows at 2 ms1 in the main pipe and at 7 ms on the second floor. find the diameter of the smaller diameter pipe. (i) [4 marks (ii) if the gauge pressure in the main pipe is 2x10 pa, find the gauge pressure in the pipe on 15 marks) (ii) discuss if it is possible to carry water to a faucet 17 m above ground, on the roof-top by 15 marks the second floor. extending the smaller diameter pipe

Luke and carrie are driving down a straight section of the interstate at 70 mph in luke's new convertible. carrie is drinking a soda in the passenger seat. when she is done she tosses the bottle straight up in the air, just above the height of the car. what will happen to the bottle if air resistance is neglected? a. the bottle will land in carrie's lap. b. not enough information is given. c. the bottle will land on the interstate in front of the car. d. the bottle will land on the interstate behind the car.

Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge

First, launch the video below. you will be asked to use your knowledge of physics to predict the outcome of an experiment. then, close the video window and answer the question at right. you can watch the video again at any point. part a as in the video, we apply a charge +q to the half-shell that carries the electroscope. this time, we also apply a charge –q to the other half-shell. when we bring the two halves together, we observe that the electroscope discharges, just as in the video. what does the electroscope needle do when you separate the two half-shells again? view available hint(s) as in the video, we apply a charge + to the half-shell that carries the electroscope. this time, we also apply a charge – to the other half-shell. when we bring the two halves together, we observe that the electroscope discharges, just as in the video. what does the electroscope needle do when you separate the two half-shells again? it deflects more than it did at the end of the video. it deflects the same amount as at end of the video. it does not deflect at all. it deflects less than it did at the end of the video. submit