In an experiment, a student shines laser light on a semicircular acrylic block at an angle of 75o to the surface of the block. What is the angle of incidence? You do not need to add units to your answer.

Which quantities are scalars? choose all that apply a.distance b.speed c. acceleration d.velocity

The solar panels used by mark function because of the photoelectric effect. light shines on the cells causing electrons to be ejected from the metal, which produces an electric current. at night on mars, no light will fall on the solar cells and no electric current will be generated. according to your notes, what type of light is typically needed to cause the photoelectric effect? a)visible b)ultraviolet c)infrared

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?