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In the early 1800s in England, a debate arose in Parliament over the Corn Laws, restriction on imports of grain into the country. David Ricardo, the father of the comparative advantage concept, favored the repeal of these import restrictions. Consider the two relevant political groups in England at that time: land owners and capital owners. Who do you think agreed with Ricardo? Why?
A molecule of DNA (deoxyribonucleic acid) is 2.35 µm long. The ends of the molecule become singly ionized: negative on one end, positive on the other. Obtain the effective spring constant of the molecule
At a factory, a noon whistle is sounding with a frequency of 497 Hz. As a car traveling at 84km/h approaches the factory, driver hears the whistle at frequency fi. After driving past the factory, the driver hears frequency ff. What is the change i..
measuring distances to high precision is a critical goal in engineering. numerous devices to exist to perform such
A ray of sunlight is passing from diamond into crown glass; the angle of incidence is 35.8°. The indices of refraction for the blue and red components of the ray are: blue (ndiamond = 2.448, ncrown glass = 1.528), and red (ndiamond = 2.407, ncrown gl..
Coherent light with wavelength 606 nanometer passes through two very narrow slits, Obtain for what wavelength of light will the first-order dark fringe (the first dark fringe next to a central maximum) be observed at this same point on the screen
A playground is on the flat roof of a city school, 5 m above the street below (see figure). The vertical wall of the building is h = 6.20m high, to form a 1.20 m high railing around the playground.
A 55-cm-long wire with a mass of 10.6 g is under a tension of 53.0 N. Both ends of the wire are held rigidly while it is plucked. What is the frequency of the third harmonic
In 6.00 days the number of radioactive nuclei decreases to one-eight the number present initially. What is the half-life (in days) of the material
A tennis player hits a ball at ground level, giving it an initial velocity of 21.0m/s at 60.0 degree above the horizontal. What is the ball's acceleration at its highest point
a charge of 18 nc is uniformly distributed along a straight rod of length 3.0 m that is bent into a circular arc with a
A soldier pushes a crate of boxes (mass 12.0kg) with a force=155N parallel to the tarmac, Calculate the work due to the gravitational attraction force on the boxes in pushing the box 4.50 up the incline
Suppose a man's scalp hair grows at a rate of .31 mm per day. What is this growth rate in feet per week
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