Fig. 28-10 shows a segment of wire of length l = 0.5 m, carrying a current i = 20 a. calculate the magnitude of the magnetic field produced by this wire at a point p located at a distance d = 1.0 m from one of the ends of the wire.

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

Which best represents the law of conservation of mass ?

In the first law of thermodynamics, triangle e=q-w, what does q stand for