Archimedes’ principle stating that the pressure applied to an enclosed fluid is transmitted to every part of the fluid without reducing in value?

What is the measurement of how fast an object moves relative to a reference point?

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)

Aball is thrown horizontally from a cliff at 8m/s .in what direction is the ball moving 2s later?