A wave has a frequency of 900 Hz and a wavelength of 200 m. At what speed is this wave traveling?

How many moles of magnesium is 3.01 x10^22 atoms of magnesium?

Which statement correctly identifies the scientific question and describes why the question is scientific? question 1 refers to the supernatural.question 2 reflects a moral or social value.question 3 refers to something that can be measured.question 4 reflects a question that can’t be observed.

Define a is a tiny pavket of energy