Which of the following statements are characteristics of magnetic fields? Select all that apply.

A.) Magnetic fields point from the north pole to the south pole of a magnet.
B.) The earth’s magnetic field has no effect on the electron rays coming from the sun.
C.) An example of the Biot-Savart law is the effect of the earth’s magnetic field on the electron rays coming from the sun.
D.) The north pole of a magnet will be attracted to the south pole of the earth.
E.) If a bar magnet is cut in half two magnets with like poles will be created.

Antireflective coatings on solar cells are often made by applying a thin film of silicon nitride (sinx), which has an index of refractive of 1.2, on the top of the silicon solar cell, which has a refractive index of about 3.5. however, the sun emits radiation of various wavelengths which the solar cell absorbs, and the antireflective coating can only absolutely minimize the reflection of one of these wavelengths. the coating thickness is chosen to reduce the reflection of green/yellow light (e = 2.2 ev), which is the most intense color in the solar spectrum (shown below). which of the following coatings would minimize reflection of green/yellow light? the answer is 820 nm how? what is the angular width of the central maximum of an electron traveling at 2 x 108 m/s going through a single slit of width 1 mm.