Can you think of any limitations of this technique of testing the effectiveness of antimicrobial agents? If a real person were involved, what other tests might give you more confidence in your results?

Which branches of natural science include the study of an organism that lived 10 million years ago

The atoms in a nickel crystal vibrate as harmonic oscillators with an angular frequency of 2.3 × 1013 rad/s. the mass of a nickel atom is 9.75 × 10-26 kg. what is the difference in energy between adjacent vibrational energy levels of nickel? (h = 6.626 × 10-34 j • s, , 1 ev = 1.60 × 10-19 j)

Lightning is an example of what phenomenon? a release of a large amount of energyan absorption of a large amount of energya natural electric circuita natural electric current