Awooden block of mass m resting on a frictionless, horizontal surface is attached to a rigid rod of length script l and of negligible mass. the rod is pivoted at the other end. a bullet of mass m traveling parallel to the horizontal surface and perpendicular to the rod with speed v hits the block and becomes embedded in it.
(a) what is the angular momentum of the bullet–block system about a vertical axis through the pivot? (use any variable or symbol stated above as necessary.) l=
(b) what fraction of the original kinetic energy of the bullet is converted into internal energy in the system during the collision? (use any variable or symbol stated above as necessary.)
? k
ki
=

12 drag each label to the correct category. decide whether each statement describes mass or weight. measured in newtons measured in kilograms does not change when gravity changes === a gravitational force changes when gravity changes the amount of matter in something mass weight

Which is not one of the major climate zones? question 3 options: rain forest polar tropical temperate

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.)