In the past, salmon would swim more than 1130 km(700 mi) to spawn at the headwaters of the salmon river in central idaho. the trip took about 22 days, and the fish consumed energy at a rate of 2.0 w for each kilogram of body mass. a. what is the total energy used by a 3.5-kg salmon while making this 22-day trip? b. about 80% of this energy is released by burning fat and the other 20% by burning protein. how many grams of fat are burned? c. if the salmon is about 15% fat at the beginning of the trip, how many grams of fat does it have at the end of the trip?

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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 -