In an exothermic reaction, energy is the surroundings.

In an endothermic reaction, energy is
the surroundings.

current and voltage can both be different in different parts of a circuit so it matters where you place the ammeter and voltmete

f=ma newton

f=100x2.5=250n

beta is electron from nucleus

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

the right answer is 0.3 meters per second