What two factors will most likely change the speed of a mechanical wave? amplitude and wavelength frequency and amplitude period and wavelength period and amplitude

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?

Aphoton is absorbed by an electron that is in the n = 3 state of a hydrogen atom, causing the hydrogen atom to become ionized. very far away from the nucleus, the released electron has a velocity of 750,000 m/s. what was the wavelength of the absorbed photon?

Newtons view of arrangement of the universe. don't copy from anywhere.