Drag the variable(s) and constant(s) to the appropriate places in the table. Independent Variable(s) Dependent Variable(s) Constant(s) The direction of the pull
The type of surface used
The mass of water in the cup
The force measured by the spring scale​

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)