Si 26 millones de electrones se remueven de una esfera neutral, ¿cuál es la carga en coulombs sobre la esfera?

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?

Frank just graduated from eighth grade. assuming exactly four years from now he will graduate from high school how many seconds does he have until his high school graduation