What makes electricity? Is it the heat or friction or? doesn't higher voltage reduce resistance? why is it higher if voltage "pushes" the electrons and resistance "stops" the electrons"?

Why is it the same resistance before the first resistance and before the last resistance in the same closed circuit??

If voltage is the speed of electrons passing and you measure the speed, how do you measure current? Because doesn't the length of the conductor like decides how many electrons there are? Because the electrons enters AND leaves the conductor

Which of the following energy forms are invovled in a nuclear power plant ? heat ,sound , electrical , nuclear ,mechanical

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is

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.