Astone tied to the end of a string is swung with a constant speed around a horizontal circle with a radius of 1.5m. it makes two complete revolutions each second. what is its acceleration?

Infrared rays have a shorter wavelength than question 11 options: x-rays. ultraviolet rays. radio waves. gamma rays.

Wave functions describe orbitals in a hydrogen atom. each function is characterized by 3 quantum numbers: n, l, and ml. if the value of n = 2: the quantum number l can have values from to . the total number of orbitals possible at the n = 2 energy level is .

What’s #16 asking me and how do i solve it?