Explain physically how one can use gauss law
(i) Explain physically how one can use Gauss's Law to find the electric field of a long (infinite) charged wire? (ii) Now do the same for a finite charged wire, explain why you can still use Gauss's Law but it's not useful to use in the case.
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The number of traffic accidents in a town in 10 randomly chosen rainy days in 2012 is as follows: {4, 0, 6, 5, 2, 1, 2, 0, 4, 3). Use these data to estimate the proportion of rainy days in this town that had 2 or fewer accidents that year.
A 10-kg block is attached to spring A and connected to spring B by a cord and pulley. The block is held in the position shown with both springs unstretched when the support is removed and the block is released with no initial velocity.
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So why don't the electric fields for the infinite line and infinite sheet of charge also fall off in the same way? Hint: As the Gaussian surface gets very far from the source charge, look at what its characteristics depend on.
If the mass flow rate of steam is 50 kg/h, determine the rate at which heat is removed from the steam, in kJ/h. The rate of heat rejection to the cold reservoir, in kJ/h.
The structure of a house is such that it loses heat at a rate of 4825 kJ/h per degree Celcius difference between the indoors and outdoors. A heat pump that requires a power input of 6.2 kW is used to maintain this house at 26 degrees Celsius.
A sphere is placed in a uniform external electric field. Accurately draw the vector field lines for the situation when the sphere is a (i) conductor and (ii) then replaced with a uniformly polarizable dielectric. (iii) Briefly explain how your fie
Steam enters a turbine at 120 bars and 440 0C and expands to 1 bar. At the exit entropy is 0.650 kJ/kg. K, greater than at the inlet. The process is adiabatic and change in kinetic and potential energies may be neglected.
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