# Question: Einstein s famous mass energy equivalence is expressed by the equation

Einstein’s famous mass– energy equivalence is expressed by the equation E = mc2, 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)?

(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)?

**View Solution:**## Answer to relevant Questions

In the British system, 16 oz = 1 pt and 16oz = 1 lb. Is something wrong here? Explain. Here’s an old one: A pound of feathers weighs more than a pound of gold. How can that be? Suppose that when the United States goes completely metric, the dimensions of a football field are established as 100 m by 54 m. Which would be larger, the metric football field or a current football field (see Exercise ...A person weighs 170 lb. (a) What is his mass in kilo-grams? (b) Assuming the density of the average human body is about that of water (which is true), estimate his body’s volume in both cubic meters and liters. Explain ...The Roman Coliseum used to be flooded with water to re- create ancient naval battles. Assuming the circular floor be 250 m in diameter and the water to have a depth of 10 ft, (a) how many cubic meters of water are required? ...The outside dimensions of a cylindrical soda can are reported as 12.559 cm for the diameter and 5.62 cm for the height. (a) How many significant figures will the total outside area have: (1) two, (2) three, (3) four, or (4) ...Post your question