In order to take advantage of wave power, water must always come in direct contact with the blade of a turbine to generate electricity.
a. true
b. false

What is the stall speed at sea level of an airplane that weights 10000 lbs., has a wing area of 300ft^2, and a maximum lift coefficient of 1.4? what is the stall speed if flaps that double cl,max are applied?

Give an example in which the electrical energy changes to light energy

1700 j of energy is lost from 0.14 kg object , the temperature decreases from 50°c to 45°c what is the specific heat of this object, amd what is the material ?