Cho AB 45cm, BC 32cm, ABC 100. Công của lực điện để một electron đi từ A đến B là -7,327.10^-17 J và từ B đến C là -4,111.10^-17 J . Tính

cường độ điện trường.

In which of the following cases is work being done on an object? question 2 options: pulling a trailer up a hill carrying a box down a corridor suspending a heavy weight with a strong chain pushing against a locked door

Astate of matter all that has define volume and can flow is a(n)

Unpolarized light of intensity i_0=750w/m^2 is incident upon two polarizers. after passing through both polarizers the intensity is i_2=280w/m^2. (a) what is the intensity of the light after it passes through the first polarizer in w/m^2? (b) write an equation for the angle between the polarizers in terms of the initial (i_0) and final (i_2) intensities. (c) find the angle between the polarizers in degrees.