A 3600kg truck is parked on a 20 degree slope. How big is the friction force on the truck? The coefficient of static friction between the tires and the road is 0.90. Express your answer to two significant figures and include the appropriate units.

An  atom  (ours, not carroll's) consists of a positively charged  nucleus, surrounded by one or more negatively charged particles called  electrons. the positive charges equal the negative charges, so the atom has no overall charge; it is electrically neutral. most of an atom's mass is in its nucleus; the mass of an electron is only 1/1836 the mass of the lightest nucleus, that of hydrogen. although the nucleus is heavy, it is quite small compared with the overall size of an atom. the radius of a typical atom is around 0.1 to 0.25 nanometres (nm), whereas the radius of a nucleus is about 10-6  nm.  *  if an atom were enlarged to the size of the earth, its nucleus would be only 200 feet in diameter and could easily rest inside a small football stadium.read more on -

Good moring let me you on this question the answer the electric force  have a good day ; )

The big glowy thing is called the sun it is a star in our galaxy and is over 1 million degrees