Find the magnitude of the sum of head two factors:

A150 w lamp emits light of wavelength 590 nm uniformly in all directions. what is the photon flux (photons per unit area per unit time) on a small screen at a distance 2.3 m from the lamp? assume the photons are uniformly distributed over the surface of a sphere of radius 2.3 m.

In the 1980's, congress authorized the u. s. department of energy to build the wipp facility in the chicuahuan desert in new mexico. what is the purpose of wipp?

Which is not one of the major climate zones? question 3 options: rain forest polar tropical temperate