The equation for photon energy, e, is e=hc/λ
where h = 6.626×10−34 j⋅s (planck's constant) and c = 2.99×108 m/s (the speed of light).
what is the wavelength, λ, of a photon that has an energy of e = 3.92×10−19 j ?

answer; economic order quantity;

c- cold periods in earth's history during which glaciers covered much of the surface.

explanation:

i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.