Sarah goes 36km west then 46km east
what is the displacement

According to newtons universal law of gravitation, which would change the parh of the ball so it traces out widest curved path possible?

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)

Wind and moving water provide energy. question 1 options: chemical mechanical thermal none of the above