6) The work done as output is less than the work that is supplied as input. What is the BEST explanation for this?
A)
Work is not done efficiently,
B)
All machines are inefficient
Some energy is lost as heat due to friction
D
It is impossible to measure work input and output

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.

The mini-refrigerator fire was most likely caused by what type of wiring?

Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z