1) Indicar v o f, en caso de ser falso cambia la palabra subrayada por la correcta. a) Los cambios físicos ocurren cuando las sustancias iniciales = sustancias finales.

b) Los cambios físicos ocurren cuando las sustancias iniciales = sustancias finales.

c) Cuando se quema un papel se produce un cambio químico.

d) Al fundir el oro para hacer un anillo ocurre un cambio químico.

hi, can u speak English pl

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)