Along, straight metal rod has a radius of 5.70 cm and a charge per unit length of 28.2 nc/m. find the electric field at the following distances from the axis of the rod, where distances are measured perpendicular to the rod's axis. (a) 3.10 cm magnitude n/c direction (b) 18.0 cm magnitude n/c direction(c) 180 cm magnitude n/c direction

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.)

What happens when you slowly pulled the carboard?

An object is kept at 45 m high and how much time will it take to reach the ground