se sabe que el cuerpo humano posee carbono-14 cuyo periodo de semidesintegracion es 5 730 años, si para determinar restos humanos, hallados en ruinas pre-hispanicas se constato un residuo de 10% de carbono -14 ,¿cual es la antiguedad de dichos restos humanos

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)