Element x has a mass number of 40 and an atomic number of 20, and element y has a mass number of 56 and an atomic number of 26. element x has
more neutrons and fewer electrons than element y.
more neutrons and electrons than element y.
fewer neutrons and electrons than element y.
fewer neutrons and more electrons than element y.

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 are the applications of electromagnetic waves

You are given a vector a = 125i and an unknown vector b that is perpendicular to a. the cross-product of these two vectors is a × b = 98k. what is the y-component of vector b?