Два одинаковых фоторезистора в темноте подсоединены последовательно к источнику постоянного напряжения. Во сколько раз уменьшилась сопротивление одного из них, если при его освещении падение напряжения на нем уменьшилась в 2 раза ?

The earth is constantly spinning on its axis, like you might spin a basketball on your finger. it is this spinning of the earth that causes

The material that keeps its new shape after it is stretched is called?

Light from a sodium lamp passes through a diffraction grating that has 1000 slits per millimeter. the interference pattern is viewed on a screen 1.000 m behind the grating. the first (m = 1) two bright yellow fringes that are visible are 0.7288 m and 0.7300 m from the central maximum. what are the wavelengths of these two fringes?