Am nevoie urgenta de la proboleme, de la 8 la 11,macar cateva probleme daca nu le stiti pe toate, va rog din inima nu stiu sa fac si am nevoie de ajutor.

Protons and neutrons are found within the nucleus of an atom

According to social exchange theory, altruistic behaviors benefit the individual who performs them. t/f

Suppose water is leaking from a tank through a circular hole of area ah at its bottom. when water leaks through a hole, friction and contraction of the stream near the hole reduce the volume of water leaving the tank per second to cah 2gh , where c (0 < c < 1) is an empirical constant. a tank in the form of a right-circular cone standing on end, vertex down, is leaking water through a circular hole in its bottom. (assume the removed apex of the cone is of negligible height and volume.) (a) suppose the tank is 20 feet high and has radius 8 feet and the circular hole has radius 2 inches. the differential equation governing the height h in feet of water leaking from a tank after t seconds is dh dt = − 5 6h3/2 . if the height of the water is initially 8 feet, how long will it take the tank to empty? (round your answer to two decimal places.)