If solar radiation is 1200 w/m2 , how many photons strike the leaf every second? assume three significant figures and an average wavelength of 504 nm for solar radiation.

The particles of an ice cube at 0°c (represented by the blue circles) come in contact with the particles of juan’s hand at 37°c (represented by the orange circles). which diagram correctly represents the temperature of the two substances and the direction of heat flow?

The necleus of an atom is made up of what subatomic particles?

Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.