Assuming this is a distance time graph( ignore the speed time title) assume metres on vertical scale. describe in as much detail the journey shown. include speeds, total distance, when stationary, and when the return journey started. Please help also please dont comment if u dont know the answer tysm

Starting with only the balmer series light (visible light), how could we ensure that the solar panels generate a current that mark can use for his power station? a)by gradually increasing the brightness (amount) of light that we shine on it. b)by gradually increasing the frequency of the light we shine on it. c)by gradually increasing the wavelength of the light that we shine on it.