A stone of weight 1 N falls downwards. Its g. p.e.
decreases by 100J. How far has it fallen?

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)

What can you increase the strength of an electromagnet by

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?