The mass loss can be computed from the Einstein formula:
m = E/c^2
= 48*10^3/(3.0*10^8)^2
= 5.3*10^-13 kg
= 5.3*10^-10 g
In my opinion, that is too low to be measured.
when 1 g of gasoline is burned in an engine about 48 kj of heat is produced. how much mass is lost in the process? do you think this mass change could directly be measured?
3 answers
According to a Wikipedia article,
"Exothermic chemical reactions in closed systems do not change mass, but become less massive once the heat of reaction is removed, though this mass change is much too small to measure with standard equipment."
"Exothermic chemical reactions in closed systems do not change mass, but become less massive once the heat of reaction is removed, though this mass change is much too small to measure with standard equipment."
. A 70-kg man and a 50-kg woman are in a 60-kg boat when its motor fails. The man dives into the water with a horizontal speed of 3m/s in order to swim ashore. If he changes his mind, can he swim back to the boat if his swimming speed is 1m/s? If not, can the woman change the boat's motion enough by diving off it at 3 m/s in the opposite direction? Could she then return to the boat herself if her swimming speed is also 1 m/s?
0 answers