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A 25-kg block of copper at at initial temperature of 150 C equilibrates with 0.79 kg of liquid water at an initial temperature of 20 C in an insulated tank. If the average specific heat of copper can be taken to be 0.395 kJ/kg.K, determine the final temperature
a 25kg steel tank having a volume capacity of 250 litres is filled with liquid water at room temperature. what is need
consider the following single-dwell cam specificationrise segment 0 to 20 mm in 180 degreesdwell segment at 20mm
Niobium forms a substitution solid solution with vanadium. Compute the number of niobium atoms per cubic centimetre for a niobium–vanadium alloy that contains 27 wt% Nb and 73 wt% V. The densities of pure niobium and vanadium are 8.57 and 6.10 g/cm3,..
it is well known that wind makes cold air feel much colder as a result of the wind-chill effect which is due to the
Air enters a compressor operating at steady state at 1 atm. with a specific enthalpy of 290 kJ/kg and exits at a higher pressure with a specific enthalpy of 1023 kJ/kg. The mass flow rate is 0.1 kg/s. If the compressor power input is 77 kW. Neglect f..
a compressor is operating in a continuous steady-state manner to produce a gas a temperature t2 and pressure p2 from
consider a large plane wall of thickness l 0. 5 m. the wall surface at x 0 is insulated while the surface at x l is
magneto is seeking to produce a new helmet using a deep drawing process in which a sheet of 3103 aluminum will be
, determine the speed of the boy at the instant = 4 . Neglect the size of the limb. When = 0, = 8 so that and are coincident, i. e., the rope is 16 long.
a game consists of tossing disks onto a table marked in squares of side a. if the disk does not touch any line or edge
a vacuum cleaner is plugged into a 120.0-v socket and uses 3.6 a of current in normal operation when the back emf
the 2kg block a and the 5kg block b are initially at rest on the inclined plane as shown. all surfaces in this system
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