Answer for this question

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.

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.

What is a carrier wave and how does it affect what you hear on the radio