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The density of a liquid is to be determined by an old 1cm diameter cylindrical hydrometer whose division marks are completely wiped out. The hydrometer is first dropped in water, and the water level is marked. The hydrometer is then dropped into other liquid, and it is observed that the mark for water has risen 0.6 cm above the liquid-air interface. If the height of original water mark is 13.6 cm, determine the density of the liquid.
0.25 kg of red-hot 700 c coals are taken from the fireplace and left in the middle of a room. the room is 3 m x 4 m x
earth is required to be excavated from borrow pits for building an embankment. the wet unit weight of undisturbed soil
The piston is then move in,and heat is rejected bt the air reversibly at constant pressure until the volume is the same as it was initially.Calculate the net heat flow and the overall change of entropy.sketch the process of p-V and T-s diagram.
a piston- cylinder assembly with initial volume of 80 liters contains 4kg of r-134a at a pressure of 160 kpa state 1.
a person holds her hand out of an open car window while the car drives through still air at 87 mph. a under standard
determine the compressor work input requireed to compress steam isentropically from 100 kpa to 1 mpa assuming that the
the hot and cold inlet temperatures to a concentric tube heat exchanger are thi 200degc tci 100degc respectively.
If the rod experienced 28% uniform strain, calculated the load at the onset of necking.
flow and pressure measurements are used to estimate the friction factor for a pipeline. the length of the pipeline
consider steady flow of a constant-property fluid in a long duct formed by two parallel planes. consider a point
an ideal vapor compression refrigeration cycle that uses r-134a maintains a pressure in the condenser of 1000kpa and
design 2-shell pass and 8-tube pass heat exchanger for heating ethyl alcohol from 25degc to 70degc at a rate of 2.9
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