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Question: A Czochralski crystal is grown with an initial Sb concentration in the melt of 1 X 1016 cm-3? Aft 80% of has the melt has been used up in pulling the crystal, pure Silicon is added to return the melt to its original volume. Growth is then resumed. What Will the Sb concentration be in the crystal after 50% of the new melt has been consumed by growth? Assume k0, = 0.02 for Sb.
two identical containers are open at the top and are connected at the bottom via a tube of negligible volume and a
A thick-walled copper pipe (inner radius a and outer radius b) is centered on the z-axis and carries a current density of magnitude J(r)=B*r. (The parameter B has units A/m^3). A wire runs parallel to the pipe a distance R=2*b away from the z-axis..
A car is safely negotiating an unbanked circular turn at a speed of 29 m/s. The road is dry, and the maximum static frictional force acts on the tires, what speed must the driver slow the car
A thin, uniform rod is hinged at its midpoint. To begin with, one half of the rod is bent upward and is perpendicular to the other half. What is the angular velocity of the straight rod
a 0.47 kg object connected to a light spring with a force constant of 22.0 nm oscillates on a frictionless horizontal
A wave has an angular frequency of 110 rad/s, Calculate the angular wave number and the speed of the wave
The electric potential at x = 3.0 m is 120 V, and the electric potential at x = 5.0 m is 190 V. What is the electric field in this region
How important are cultural differences in determining levels of tolerance toward disputes, and in what ways can disputes lead to positive or negative outcomes for organisations while they are negotiating internationally?
an electron is shot at an initial speed of v0 = 2.00 × 106 m/s, at an angle ?0 = 35.0° from an x axis. It moves through a uniform electric field = (5.00 N/C), find the velocity of the electron when it hits the screen
What assumptions can be made about the radiation per unit areaof a blackbody? Is there a standard area of black body? What value for emissivity
A piece of string 5.30 m long has a mass of 15.5 g. What must the tension in the string be to make the wavelength of a 128 Hz wave 120.0 cm.
Describe how a light water commercial nuclear reactor works. Include a diagram and talk about the role of each of the following factors; fuel, moderator, control rods, coolant, reactor vessel, shielding.
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