Fan element has the atomic mass (
a. of 80 and its atomic number (z) is 35, how many neutrons does it have

The de broglie relation λ=h/p can be rewritten in terms of the wave number k as p=kℏ. recall that wave number is defined by k=2π/λ. using the fact that λ=v/f, find the wave numbers k1 and k2 corresponding to frequencies f1 and f2. express your answer as two expressions

Why cooking gas has a typical smell

Which of the following list the divisions of the geologic time scale in order from longest to shortest