Which word equation is used to calculate the acceleration of an object? a. subtract the initial velocity from the final velocity and multiply the result by the time. b. subtract the initial velocity from the final velocity and divide the result by the time. c. add the initial velocity and the final velocity and divide the result by the time. d. add the initial velocity and the final velocity and multiply the result by the time.

Correct answer is: 
B. Subtract the initial velocity from the final velocity and divide the result by the time

In fact, the formula to calculate the acceleration is

where vf is the final velocity, vi the initial velocity, and t the time.

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 -

Dshould be the right answer i think