Astream of water strikes a stationary turbine blade horizontally as the drawing illustrates the incident water stream has a velocity of 4 m s while the exiting water stream has a velocity of 4 m s the mass of water per second that strikes the blade is 31 kg s find the magnitude of the average force exerted on the water by the blade

Which describes increasing the efficiency of energy resource

Ultraviolet radiation is dangerous because it has a high enough energy to damage skin cells. what is the best explanation of the relationship between wavelength and wave energy? a) wave energy is related only to frequency, not wavelength. b) longer wavelengths have lower frequencies but higher energy. c) the shorter the wavelength, the lower the frequency and the higher the energy. d) the shorter the wavelength, the higher the frequency and the higher the energy.

Acorporation gives out its profits as dividends paid to whom?