In an experiment the hypothesis is if the wavelength of the light shining on a plant is shortened the rae of the photosynthesis is slowed down, if the experiment is preformed the independent variable .. a) will be the wavelength of the light b) will be the plant on whcih the light is shining c) will be the rate of photosynthesis d) can not be determined

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