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1. An iron wire with a diameter of 1.2 mm has a uniform electric field of 0.35 V/m imposed along its entire length. The temperature of the wire is 45 °C. Assume one free electron per atom.
a. Determine the resistivity of the wire ?
b. What is the current density in the wire?
c. What is the total current in the wire?
d. What potential difference must exist between the ends of a 3-m length of the wire to produce the stated electric field?
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a little girl and her father are both playing on a merry go round in the park. what is the average angular velocity of the father
Universal beam section: bending moment, maximum stress, radius of curvature, A universal beam section has a second moment of area about its neutral axis of 6487 cm4 and its overall depth is 305 mm
An amount of ideal gas is con?ned to a sealed box at one-half atmospheric pressure, i.e., 50.65 kPa. With clever control, the volume of the box is reduced to 1/8 of its original value (without any gas leaking in or out), while the temperture is ke..
The far point of a nearsighted person is 5.0 m from her eyes, and she wears contacts that enable her to see distant objects clearly. How high is the image formed by the contacts
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the wire unwinds without stretching or slipping, causing the pulley to rotate. Explain how far must the stone fall so that the pulley has 2.70 J of kinetic energy?
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a ball is tossed into the air at a speed of 64.0 m/s at an unknown angle. If the ball is observed to rise to a maximum height of 7.80 m, elucidate at what angle was the ball thrown relative to the ground?
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