Physics, 13.03.2020 18:31 monster5368
A solenoid is created by wrapping a L = 85 m long wire around a hollow tube of diameter D = 1.5 cm. The wire diameter is d = 1.1 mm. The solenoid wire is then connected to a power supply so that a current of I = 4.5 A flows through the wire.
A. Write an expression for the number of turns, N, in the solenoid. You do not need to take into account the diameter of the wire in this calculation.
B. Calculate the number of turns, N, in the solenoid.
C. Write an expression for the length of the solenoid, (L2), in terms of the hollow tube D, the length of the wire L, and the diameter of the wire d. Assume it is constructed by using only 1 layer of loops (note that most solenoids are actually constructed using many layers to maximize magnetic field density).
D. Calculate the length of the solenoid, (L2), in meters.
E. Calculate the magnitude of the magnetic field at the center of the solenoid, in Tesla.
Answers: 1
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You are the coordinator for a program that is going to take place at night in a rectangular amphitheater in the mountains. you will have no access to any electricity, but you must be able to illuminate the entire grounds. you know the intensity of the light from a lantern varies inversely as the square of the distance from the lantern. suppose the intensity is 90 when the distance is 5 m. a. write an equation to model the situation. b. solve for the constant of variation. c. write the equation to model the situation using the constant () of variation. d. you have been given lanterns with 40 light intensity. use your equation to solve for the distance from the lantern. e. you need to illuminate 225 km. how many meters do you need to light? f. how many lanterns will you need?
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A solenoid is created by wrapping a L = 85 m long wire around a hollow tube of diameter D = 1.5 cm....
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