One of the main reference lines on the spectrum of hydrogen is located at 650 nanometers. if the placement of this line on the hydrogen spectrum from a distant star was at 649 nanometers, this would indicate that
the star has no radial motion with respect to earth
the star is moving toward earth
the star is moving away from earth

What type of relationship exists between the length of a wire and the resistance, if all other factors remain the same? o a. resistance is directly related to length. ob. resistance is directly related to the square of the length. c. resistance is inversely related to the length. d. resistance is inversely related to the square of the length. reset next

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?

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 .