What is the answer to life the universe and everything?

=force × distance a. work b. velocity c. pressure d. momentum

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical

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)