What accounts for an increase in the temperature of a gas that is kept at constant volume?
a. energy has been removed as heat from the gas.
b. energy has been added as heat to the gas.
c. energy has been removed as work done by the gas.
d. energy has been added as work done by the gas.

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.

Which lists the organs in the correct order as food passes from the mouth to anus?

J. j. thomson’s experiment disproved the theory that an atom