Boiling water transfers energy to an ice cube this is an example of

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.

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

The substances that are necessary for producing of certain hormones and that store and transport vitamins