Yes they do. So if you need to add or subtract a pair, then you have to first change one or the other so that they both have the same power of 10.
The answer is to your question is force
Answer:
It needs 3 more electrons
Explanation:
For it to be stable it needs to have 8 electrons on the outer shell.
Answer
given,
mass of car (m) = 1200 Kg
speed of cur, u = 25 m/s
mass of truck(M) = 9000 Kg
speed of truck, u' = 20 m/s
v = 18 m/s
a) using conservation of momentum
m u + M u' = m v + M v'
1200 x 25 + 9000 x 20 = 1200 x 18 + 9000 x v'
9000 v' = 188400
v' = 20.93 m/s
b) To calculate losses, we will find the kinetic energies before & after collision. Any difference would give us the losses (in energy form).
(K E)₁= (K E)₂+ Losses
losses = (K E)₂ - (K E)₁
=
=
=9038 J
Descending air causes high air pressures. The south pole is higher than the north pole because it is over land. At the poles it is very cold and dense, while the equator is warm and less dense so air pressure is lower.
I hope that helps.