Which one of the following is not a simple machine?
a. lever
b. pulley
c. hammer
d. inclined plane user: an input force of 20 newtons is applied to a lever at a distance of 2 meters from the fulcrum. an object 0.5 m away from the fulcrum (and on the other side) is lifted by the 20-n force. what is the output force?
a. 10 n
b. 20 n
c. 40 n
d. 80 n

Total solidification times of three casting geometries are to be compared: a sphere, a cylinder, in which the length-to-diameter ration - 1.0, and a cube. volume = 1000 cm^3 for all three shhapes, and the same casting alloy is used. a) determine the solidification times of each geometry b) based on the results of part (a), which geometric element would make the best riser? c) if the mold constant = 3.5 min/cm^2 in chvorinov's rule, compute the total solidification time for each casting.

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

Which is the most accurate name for the ionic compound cas?