The answer is a) geothermal energy. I may be wrong, sorry!
<u>Answer</u>
You should still ensure you are steering straight in the direction of skidding.
Take your foot off the brake unless you are about to hit something. steer in the direction of the skid to straighten your car.
Protons are tightly bound to the nucleus of atoms, and the nucleus is
'shielded' from the outside world by the 'cloud' of electrons around it.
It takes a lot of energy to separate a proton from the nucleus. When
that happens, it's a 'radioactive' or a 'nuclear' event, and the atom has
changed into an atom of a different substance. This isn't something
that's happening around us very often.
On the other hand, the electrons are on the outside of the atom, and
it's rather easy to convince an electron to leave its atom and flow off
to somewhere else.
Yes. That equation is exactly how we write Newton's second law nowadays. Note that the 'x' just means 'times'. It's not another variable. The equation could be written as simply. F = m a .
