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Question: (a) Estimate a thermal velocity for an iron atom at its melting temperature. Suppose an iron atom in the liquid must travel a distance of 1 Å to reach a suitable site on a growing crystal surface. If the growth rate of the solid into the liquid is 1 cm/min, what fraction of iron atoms attach to the surface sites?
(b) Why is this fraction so low? (Hint: You may challenge the assumption of a 1 Å travel.) Why is this fraction even lower if the undercooling is smaller, and the growth rate is slower?
A ball of mass 0.100 kg is dropped from rest from a height of 1.25 m. It rebounds from the floor to reach a height of 0.800 m. What impulse was given to the ball by the floor
In the circuit of a radio receiver a 540 ?F capacitor is connected in series with a 12.0 mH inductor and a resistance of 2.60 ?. Does the voltage lead or lag the current
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Two trains, one traveling at 72km/h and the other at 144km/h areheaded toward each other on straight level track. When they are950m appart, each engineer sees the other train and applies the brakes.
An RLC circuit shown above with a peak voltage of 240 V, f = 60 Hz, R = 100 Kilo Ohms, L = 0.5 mH, C = 200 micro F, What is the linear resonant frequency of the circuit
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A plot of pressure as a function of volume is known as a pV diagram. pV diagrams are often used in analyzing thermodynamic processes. Consider an ideal gas that starts in state O, as indicated in the diagram. Your task is to explain how the gas proce..
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Determine what is the final temperature of a mixture of two cups boiling water (100oC) and i cup cold water 10 degrees C
William Tell shoots an apple from his son's head. The speed of the 129-g arrow just before it strikes the apple is 21.2 m/s, how massive was the apple
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