Atomic mass= number of protons + number of neutrons
hope this helps
Answer:
d. H + O2 ------ H2O
that's the formation of water
The line at the bottom of the picture ... probably the first line on a list of choices .. is the correct equation.
(2.0 x 10² N/Coul) x (-1.6 x 10⁻¹⁹ Coul) = -3.2 x 10⁻¹⁷ N
The magnitude is 3.2 x 10⁻¹⁷ Newton.
Use of lubricant
Use of ball bearers
Use of streamlined body
Use of graphite