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A body is acted upon by an upward force of 12N and a horizontal force of 20N to the right. What are the amount and the direction of the resultant?
a heat pump with a cop of 2.4 is used to heat a house. the house is losing heat to the outside at an average rate of
a composite wall made up of two materials. the temperatures on the left and right faces are maintained at constant
a 700 kg automobile is traveling at 30 msec when it suddenly applies its breaks and lock the wheels. when this happens
Determine the magnitude of tensile force and corresponding normal stress of a wire A 28-ft length of 0.25-in
For the process where q= 62.5 kj/kg and wkcs= 60 kj/kg determine the energy change if the system mass is 2 kg.
A reversible heat engine operates between 875 K and 310 K and drives a reversible refrigerator operating between 310 K and 225 K. the engine receives 2000 kJ of heat and the net work output from the arrangement equals 350 kJ. make calculations for..
an adiabatic capillary tube is used in some refrigeration systems to drop the pressure of the refrigerant from the
The water is initially at room temperature (293 K). Water boils at 373 K. How much energy must be added to the water by heating it in order for it to start boiling?
Two solid cylindrical rods (1) and (2) are joined together at flange B and loaded. If the normal stress in each rod must be limited to 110 MPa, determine the minimum diameter D required for each rod.
consider a reheat cycle with steam leaving the boiler and entering the turbine at 4 mpa and 400 c . after expanded in
a glass beaker with water is placed inside a bell jar and the jar is subjected to vacuum. the room temperature was
a 0.2 m3 tank containing helium at bar and 22 c will be used to supply 4.5 moles per minute of helium at atmospheric
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