How to prove3 equations of motion graphically

The metric unit of electrical power is the watt volt ampere ohm

One day, after pulling down your window shade, you notice that sunlight is passing through a pinhole in the shade and making a small patch of light on the far wall. you see that the patch of light seems to be a circular diffraction pattern. it appears that the central maximum is about 1 cm across and you estimate that the distance from the window shade to the wall is about 3 m. what is (a) the average wavelength of sunlight? (b) the diameter of the pinhole?

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.