The average speed of a perfume vapor molecule at room temperature is about 300 m/s, but you find the speed at which the scent travels across the room is much less than that. Explain why this is so.

The electric field between square plates of a parallel-plate capacitor has magnitude e. the potential across the plates is maintained with constant voltage by a battery as they are pulled apart to twice their original separation, which is small compared to the dimensions of the plates. the magnitude of the electric field between the plates is now equal to a)e b)e/4 c)e/2 d)4e e)2e