Compute cop of heat pump if power consumed is given
A heat pump is absorbing heat from the cold outdoors at 5oC and supplying heat to a house at 25oC at a rate of 18,000 kJ/h. If the power consumed by the heat pump is 1.9 kW, the COP of the heat pump is?
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A bar of rectangular cross section 20mm × 5mm with a central hole of diameter 4mm is subjected to a tensile force F which fluctuates between maximum and minimum values of 10 kN and 8 kN respectively.
What is the phase difference in a Young's double slit experiment where the intensity is half that of the central maximum?
The heat exchanger is not insulated and is losing heat at a rate of 25 kJ/s. If the exit temperature of hot air is 20oC, the exit temperature of cold water is (oC)?
A parallel plate capacitor is immersed in sea water. Find the ratio of RMS conduction current to RMS displacement current if voltage V(t) = Vo Cos(2*pi*f*t) is applied to the capacitor. f = 3 x 10^7 Hz. Sea water has a resistivity of ro = 0.23
Determine the concentration of Cl (in wt%) that must be added if this substitution occurs for 5% of all the original hydrogen atoms.
(i) What is the core difference between electric and magnetic forces? (ii) How doMaxwell's equations showthis?
Scores on a test have a mean of 71 and the score of 80 falls at the 75th percentile. The scores have a distribution that is approximately normal. Find the score that falls at the 39th percentile. please show the work
Air is moving between two parallel plates at 40C and 6.667 m/s. What is the minimum distance H between the plates so that T(H/2)=40C when both plates are at 100C?
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