Asteel ball whose mass is 2.0 kg is rolling at a rate of 2.8 m/s. what is it’s momentum?

What will a positive and a negative charge do if they are separated from each other?

The speed of light can be used to measure the

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)