College Physics with MasteringPhysics 7th Edition by Jerry Wilson,Anthony Buffa,Bo Lou

تمرين 20

Einstein's famous mass-energy equivalence is expressed by the equation E = mc 2 , where E is energy, m is mass, and c is the speed of light. (a) What are the SI base units of energy (b) Another equation for energy is E = mgh , where m is mass, g is the acceleration due to gravity, and h is height. Does this equation give the same units as in part (a)