At a distance of one astronomical unit (au) from the sun, the distance at which the earth’s orbit is located, the radiative heat flux from the sun is approximately 1350 w/m2 . consider a thin copper plate at this distance, one side of which faces deep space. the side facing the sun is highly polished with a solar absorptivity of 0.16 and an emissivity of 0.03, whereas the side facing deep space is oxidized with an emissivity of 0.8. find the temperature of the plate.

Two thin 80.0- cm rods are oriented at right angles to each other. each rod has one end at the origin of the coordinates, and one of them extends along the x- axis while the other extends along the yaxis. the rod along the x- axis carries a charge of - 15.0 μ c distributed uniformly along its length, and the other rod carries 15.0 μ c uniformly over its length. find the magnitude and direction of the net electrical force that these two rods exert on an electron located at the point (40.0 cm, 40.0 cm). (e

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.

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt