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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.
INFO: Suppose that a firm is currently employing 20 workers,(the only variable input), at a wage rate of $60. The average product of labor is $30, the last worker added 12 units to
Warehousing Facilities: These should be expanded in important commercial centres abroad, specially for fast-moving consumer goods. Nowadays, foreign buyers are reluctant to keep
What are the various forms of aid a developing country might receive? Here the student must show clearly the difference between grant (donor) aid; reciprocal (tied) aid; bilat
American Long Run Growth, 1800-1973 Throughout the 19th and the first three quarters of twentieth century the measured pace of economic growth continued to accelerate. The meas
What is the difference between 'scarcity' and 'shortage'? 'Scarcity' and 'shortage' have dissimilar definitions. In reality, when most of the goods and resources are scarce go
Examine the factors that influence a country s exchange rate. Suppose and define a floating exchange rate, the major issue here is to outline the factors influencing the supply
primary reference electrode,she
The sole producer of the anti-diarrhea drug STOP supplies two retail pharmacies in an isolated village. The two pharmacies compete à la Cournot in a market characterized by an inve
different btn elesticity of demand and inelasticity of demand
What is the problem of central economic
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