Determine fraction of power is lost in the transmission line
A home receives 1.7 kW of electric power from a transformer on a nearby pole. The line from the substation to the transformer is at 9.0 kV and has 0.10 \Omega resistance.
What fraction of the power is lost in this transmission line?
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If you wish to further purify this liquid after column chromatography, what techniques could you use? What would the limitation of carrying out this technique be?
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How long does this coal reserve of US will last if all coal is used to generate electricity? Assume the efficiency of converting coal to electricity is 35%.
A home receives 1.7 kW of electric power from a transformer on a nearby pole. The line from the substation to the transformer is at 9.0 kV and has 0.10 \Omega resistance. What fraction of the power is lost in this transmission line?
What is the Human Development Index? Suppose the world population in year 2100 will be 9 billion people. Assume the amount of energy needed to provide each person an acceptable quality of life is 100,000 MJ per year.
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A steel (E = 200 GPa, yield strength = 250 MPa) circular rod 1 m long with a diameter of 0.25 m is put in tension. What is the maximum tensile force that can be applied before the rod becomes permanently deformed?
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