Which of the following best describes the use of a non-renewable resource? a. Nuclear energy heats water into steam that turns the turbines of a power plant.,
b. Water falls through openings in a dam turning turbine blades that generate electricity.
c. Wind turbines gather energy from the wind and convert it into electrical energy.
d. The electronic signs along the highway are run by solar power.

One day, after pulling down your window shade, you notice that sunlight is passing through a pinhole in the shade and making a small patch of light on the far wall. you see that the patch of light seems to be a circular diffraction pattern. it appears that the central maximum is about 1 cm across and you estimate that the distance from the window shade to the wall is about 3 m. what is (a) the average wavelength of sunlight? (b) the diameter of the pinhole?

Your town is considering building a biodiesel power plant describe at least two advantages and two disadvantages

Henry, whose mass is 95 kg, stands on a bathroom scale in an elevator. the scale reads 830 n for the first 2.4 s after the elevator starts moving, then 930 n for the next 2.4 s. part a what is the elevator's speed 4.8 s after starting? express your answer with the appropriate units.