What is the approximate energy of a photon having a frequency of 4 × 107 hz? ( h = 6.6 × 10-34 j. s)?

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball

Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this

Which element would mostly likely have an electron affinity measuring closest to zero