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the cost of operating a large ship co varies as the square of its velocity v specifically co knv2 where n is the trip
a 2-m3 rigid tank contains refrigerant-134a vapor at 14 mpa 180c determine the mass of the refrigerant in kilogram
a flat plate having an area of 10 m2 and a temperature of 327 c is exposed to air at 27 c the convective heat transfer
one side of a mercury manometer is connected to the top of frictionless piston-cylinder storage tank containing 1500
it is known that a long log floats with its axis horizontal a very short log however floats with its axis vertical
calculate the conduction heat loss for the following wall 15ft long 8ft tall calculate for 8 hr inside temperature at
a vertical frictionless piston-cylinder device contains nitrogen at 125 kpa the outside atmospheric pressure is 100kpa
in thermodynamics how do you know if pressure is constant volume is constant pv is constant or pvn is constant when
an ideal reheats rankine cycle from 1 to 2 we go through turbine 1 then 2 to 3 we reheat in a steam generator then 3 to
a closed rigid tank contains a two-phase liquid-vapor mixture of refrigerant 22 initially at -20oc with a quality of
a pipe with od 603cm id 493cm carries steam at 250deg c with h 200 wm2k the pipe is covered with 25cm of magnesia 85
if a slider block c is fixed to the disk that has a constant counter clockwise angular velocity of 4 radsec determine
starting from the ideal gas law and the first law of thermodynamics derive the relationship between a pressure
using exponential smoothing with a weight of 06 on actual values1 if sales are 45000 and 50000 for 2010 and 2011 what
a copper vessel of mass 2kg contains 6kg of water if the initial temperature of the vessel plus water is 20c and the
during the compression stroke of an engine the work done on the working substance in the engine cylinder is 75kjkg and
a quantity of gas has an initial pressure of 272mnm2 and a volume of 56dm3l it is expanded according to the law pv135
during an experiment an aerospace engineering student measures a wind tunnels velocity n times the student reports the
0112m3 of gas has a pressure of 138knm2 it is compressed to 690knm2 according to the law pv14 c determine the new
in a non-flow process there is a heat loss of 1055kj and an internal energy increase of 210kj how much work is done and
air passes through a gas turbine system at a rate of 45kgs it enters with a velocity of 150ms and a specific enthalpy
a cube of material is 4 in on a side and floats at the interface between kerosene and water as shown in the figure find
a steel rod of radius 001 m and length 2 m is pulled on with a tensile force of 200000 n and the bar stretches to a
a fan with a diameter of 12 inches operates at a voltage of 120v with a current draw of 05 amps the manufacturer claims
saturated steam at 230 degrees f 2078 psia and 19386 ft cubed per pound of mass enters a compressor with an internal