Answer:
Explanation:
In all atoms, the number of protons = number of electrons, as a result the atom is neutral. Losing or gaining electrons will make the atom electrically charged and we call an electrically charged atom an ion.
Ca 2+ would be the symbol because losing two negative electrons makes calcium's nucleus more positive by two protons.
Answer:
newton's 2nd law
Explanation:
In the first law, an object will not change its motion unless a force acts on it. In the second law, the force on an object is equal to its mass times its acceleration. In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction.
If the atom is neutral, it has the same number of protons as electrons. If there are 5 electrons, there are also 5 protons.
Acceleration is a derived unit because it is derived from two quantities : Velocity and time.
We know, acceleration = Change in velocity/Time
Howdy!!
your answer is ----
total resistance 1/R = 1/9+1/9+1/9
= 3/9
=> R = 9/3 = 3 ohm
according to ohms law
voltage = current × resistance
= 4 × 3 = 12 volt
hope it help you
