Suppose an electrical distribution line has a resistance of 1 ohm and needs to deliver 1 MW (megawatt) of electrical power. Is it more efficient to deliver that power at Vrms = 120 V or at Vrms 120 kV? Calculate the power wasted as heat in the distribution line to answer the question. (Hint: Actual distribution lines are high-voltage, so...)

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Q: could part d of this question be done please

A: (d) Write the expression for gradient of the function.

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A: i1 = 5.3 A i2 = 1.7 A

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A: height of ISS above the surface of earth (h) = 230 miles radius of earth (r) = 3960 miles

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A: Option A. 0.7

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Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.