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Show that a pulsed spherical wave has a complex wavefunction of the form U(r,t) = (1/r)a(t-r/c) where a(t) is an arbitrary function. An ultrashort optical pulse has a complex wavefunction with a central frequency corresponding to a wavelength λ0 = 585nm and a Gaussian envelope of rms width σ1 = 6fs. How many cycles are contained within the pulse width? If the pulse propagates in free space as a spherical wave initiated at the origin at t = 0, describe the spatial distribution of the intensity as a function of the radial distance at time t = 1ps.
M.Phil. Admission Test, 2017 Economics Model Question Group A Domain Knowledge in Economics Correct answer is as marked in black. Micro Economics 1. Consider a utility function U =
Equilibrium Exchange Rate: The theory of exchange rate determination explains how demand and supply of foreignexchange interact and jointly determine the equilibrium exchange
ref article :http://www.economist.com/news/finance-and-economics/21587795-if-congress-fails-lift-limit-americas-debts-consequences-are a.assume that the debt ceiling crisis
Various studies have concluded that the demand for movie cinema attendance is responsive to advertising. A study of one company, with movie cinemas in three neighbouring towns, sh
Determine the Business Cycle and Classical Economists Business Cycle: The business cycle is the fluctuations in the rate of economic growth that take place in the economy. Th
Government Spending Wagner's Law of economic activities applies to every economy. According to this law, there is both an extensive and intensive increase in government activit
Q. What is Exchange Rate? Exchange Rate: The ‘price' at which currency of one country can be converted into the currency of another country. A country's currency is ‘strong,'or
1. Nonwage Determinants of Labor Supply Suppose that two jobs are exactly the same except that one is performed in an air-conditioned workplace. How could you measure the value wor
Economic Cycle The economic cycle is the long-standing sample of alternating times of economic growth (expansion) and decline (recession), followed by changing economic indica
"Assume the local fixed telecommunications company is a monopoly. It costs the company €2 per month to give voice messages service to a customer. Elasticity of demand for voice mes
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