Microwave ovens emit microwave energy with a wavelength of 12.0 cm. what is the energy of exactly one photon of this microwave radiation?

Current enters a circuit at a: 1.positive terminal 2.negative terminal 3.low potential side 4.resistor

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.

Which situation will have the highest resistance? a.long wire and high temperatureb.short wire and high temperaturec.long wire and cold temperaturedshort wire and low temperature