Each answer should include a brief 12 sentence explanation a

Each answer should include a brief (1-2 sentence) explanation and any necessary equations.

1. A person is filling a knee-high bucket with water using a garden hose and holding it such that water discharges from the hose at the level of the waist. Someone suggests that the bucket will fill faster if the hose is lowered such that the water discharges from the hose at knee level. Do you agree with this suggestion? Explain.
2. Why are liquids usually transported in circular pipes?

Solution

1,

     Yes. Because the distance between the waist and the knee is greater and the potential energy (Ep = mgh) is lesser when \"h\" is a minor value. Then when we have a minor potential energy the bucket will fill faster.

2.

     Liquids are usually transported in circular pipes because pipes with a circular cross-section can withstand large pressure differences between the inside and the outside without undergoing any distortion.

     Indeed the materials concern is one thing. A circle has the minimum perimeter for its area, thus minimal material needed.