Answer:
Isotopes are the elements having the same atomic number i.e same number of protons which in turn is equal to same number of electrons. Number of protons and electrons are equal as the atom is electrically neutral. So, the only option is A.
I hope it helps you !
Answer:
Im pretty sure 1 is gravity, 2 is force
Explanation:
Water and baking soda can be used, too.
<span>A motor produces less mechanical energy than the energy it uses because the motor looses some energy to heat.</span>
Answer:
Explanation:
Therefore, the unit of speed is the meter per second, or m/s. The unit meter per second is called a derived unit, meaning that it is derived from the seven SI base units.
