Moria is drawing the electric field lines around a pair of charges. one charge is positive, and the other charge is negative.

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.

What do you think car designers do if the damage caused by a crash test is too severe?

Could we see a galaxy that is 20 billion light-years away?