The average power of a wind turbine is 3 MW. One house consumes an average of 16,000 kW. h per year.
1. Express in joules (j) the average annual energy consumed by this dwelling.

2. Find the number of homes that can be powered by a wind turbine.
Hint: 1 MW = 106 W

The radius of a sphere is increasing at a rate of 9 cm/ sec. find the radius of the sphere when the volume and the radius of the sphere are increasing at the same numerical rate.

What is similar between metals and suspensions

Avertical clean glass piezometer tube has an inside diameter of d = 1 mm and is used to measure pressure in a horizontal pipe carrying water as shown. due to pressure in the pipe, the water at 20c rises into the tube to a height h. if the water pressure in the pipe is p = 500 pa gauge, estimate the height h: (a) without considering surface tension (b) with surface tension (capillary) effects. the contact angle  can be assumed at 30 deg