1. Why does a neutral atom have no overall charge?

Which statement best explains why an object weight less on mercury than it does on earth

Distinguish between a transverse wave and a longitudinal wave.

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.