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Apparatus that liquefies helium is in a laboratory at 296 K. The helium in the apparatus is at 4.0 K. If 150 mJ of heat is transferred from the helium, find the minimum amount of heat delivered to the laboratory.
steam at t1600 degrees c p115 mpa enters a reversible and adiabatic turbine at a flow rate of 300 kgs. the steam exits
water at 50 degrees farheneit and 50 psia is heated in a chamber by mixing it with saturated water vapor at 50 psia. if
a. Find the temperature at the interface between the rod and sleeve and on the outer surface. b. What is the temperature at the center of the rod?
two people 160-lb and 120-lb respectively are in a boat that is moving forward at 4 fts. if the 160-lb person jumps
air enters an adiabatic turbine at 408ordmc and 1.3 mpa and leaves at 56 kpa. if the isentropic efficiency of the
consider a coal-fired steam power plant that produces 350 mw of electric power. the power plant operates on a simple
an engineer designing a vibration isolation system for an instrument console models the console and isolation system as
what is the density of solid aluminum at the melting temperature? what is the density of liquid aluminum at the melting
a rectangular boat the horizontal sides are l each the depth is h l2 is made of a think weightless walls and partially
a long cylinder of radius ro20cm and thermal conductivity k3 wmk is immersed in a fluid of convection coefficient
determine the work done by a 1-lb fluid system as it expands slowly within a piston-cylinder arrangement from an
the velocity of the package sliding down the ramp at point a is 2.4 fts at the instant shown. knowing that the
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