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A tank with a fixed volume contains 1 kg of dry air at 200oC . If 200 kJ of heat is added to the tank determine the final temperature and change in entropy.
r-22 in a pistoncylinder has mass 1 kg and temp. 10degc with a volume of0.02 m3 . initially state 1 the piston rests on
an engine uses methanol ch3oh as a fuel with 300 excess air. air enters the engine at 1 bar and 25 c and is mixed with
christian huygens 1629-1695 the greatest clockmaker in history suggested that an international unit of length could be
how are homogeneous and heterogeneous reactions of species accounted for in the species continuity equation? at what
The data listed below are claimed for a power cycle operating between hot and cold reservoirs at 1500 K and 450 K, respectively. For each case, determine whether the cycle operates reversibly, operates irreversibly, or is impossible.
Air expands isentropically from 1.5 MPa and 60 C (centigrade) to 0.4 Mpa. Calculate the ratio of the initial to final speed of sound.
If a Germanium wafer, which is uniformly doped with Gallium to a concentration of 5.55? 10^23 (m^3)^-1, has an electrical conductivity of 17,000 (?m)^-1 determine the mobility of the charge carriers in (m^2 / (V sec)). (Recall each gallium atom will ..
one kilogram of water fills a 150-l rigid container at an initial pressure of 2 mpa. the container is then cooled to 40
a straight fin of rectangular cross section fabricated from an aluminum alloy k 185wmk has a base thickness of t3mm and
Three children are standing on a 5×5-m raft. The weights of the children at Points A, B, and C are 375 N, 260 N, and 400 N, respectively. If a fourth child of weight 425 N climbs onto the raft, determine where she should stand if the other children r..
air enters a tank through an area of 0.2 ft2 with a velocity of 15 fts and a density of 0.03 slugft3. air leaves with a
Geoffrey is building an electronic circuit on a breadboard. He needs to supply his circuit with a 1500 ohm resistance. But he does not have any 1500 ohm resistors on hand. All he has is a box of 1000 ohm resistors.
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