Zeros between a decimal point and a non-zero number are
(blank) significant

What is the energy of a photon of ultraviolet radiation with a frequency of 4.4 × 1015 hz? planck’s constant is 6.63 × 10–34

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?

Alandscaper is shopping for landscaping materials. she wants to use materials through which water flows easily. which materials should she choose? check all that apply. clay gravel granite rocks with cracks loosely packed soil