Acell phone phone charger used 4.83 joules per second when plugged into an outlet, but 1,31 joules per second actually goes into the cell phone battery. the remaining joules are lost as heat. that's why the battery feels warm after it has been charging for a while. how efficient is the charger?

i don't know, you need to give me some answers.

explanation:

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.

causes

fossil fuels burn

cities become more industrialized

human population grows worldwide