Problem 5: Two power lines, line 1 and line 2, both of length LL = 74 m, are strung east-west between two towers. line 1 is ri2 = 1.1 m directly above line 2. The current in both power lines is IL = 72 A to the west. Assume the power lines are straight and you can use the approximation r12 << LL. Randomized Variables LL = 74 m r12 = 1.1 m IL = 72 A Part (a) Find the magnitude of the magnetic field B21, in teslas, produced by line 1 at line 2. Part (b) What is the direction of the magnetic field produced by line 1 at line 2? v Correct! South. Part (c) Calculate the magnitude of the magnetic force F21, in newtons, that the current in line 1 exerts on line 2. Part (d) Assume a typical power line has a mass of 890 kg per 1000 m. How many times larger would the current in both lines have to be for the magnetic force on the line to balance the force of gravity? IlIL = sin() cos() tan() 7 8 9 HOME cotan() asin() acos() E A AL 4 atan() acotan() sinh() 1 3 cosh() tanh() cotanh() + END - O Degrees O Radians VO BACKSPACE DEL CLEAR

Problem 5: Two power lines, line 1 and line 2, both of length LL = 74 m, are strung east-west between two towers. line 1 is ri2 = 1.1 m directly above line 2. The current in both power lines is IL = 72 A to the west. Assume the power lines are straight and you can use the approximation r12 << LL. Randomized Variables LL = 74 m r12 = 1.1 m IL = 72 A Part (a) Find the magnitude of the magnetic field B21, in teslas, produced by line 1 at line 2. Part (b) What is the direction of the magnetic field produced by line 1 at line 2? v Correct! South. Part (c) Calculate the magnitude of the magnetic force F21, in newtons, that the current in line 1 exerts on line 2. Part (d) Assume a typical power line has a mass of 890 kg per 1000 m. How many times larger would the current in both lines have to be for the magnetic force on the line to balance the force of gravity? IlIL = sin() cos() tan() 7 8 9 HOME cotan() asin() acos() E A AL 4 atan() acotan() sinh() 1 3 cosh() tanh() cotanh() + END - O Degrees O Radians VO BACKSPACE DEL CLEAR

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Ferromagnetism

Ferromagnetism is a mechanism by which some materials show magnetic properties. Iron and magnetite, an oxide of iron, are two naturally occurring materials that show the property of ferromagnetism. The word ferromagnetism is derived from the Latin name of iron, "Ferrum" as it was the first observed material to show such property. The property of ferromagnetism is shown by only a few substances such as iron, nickel, cobalt, and their alloys. Some transition metals and alloys of rare-earth metals also show ferromagnetism.

Question

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Problem 5: Two power lines, line 1 and line 2, both of length LL = 74 m, are strung east-west between two towers. line 1 is r12 = 1.l m directly
above line 2. The current in both power lines is L = 72 A to the west. Assume the power lines are straight and you can use the approximation r12 « LL.
%3D
Randomized Variables
LL = 74 m
r12 = 1.1 m
IL = 72 A
||
Part (a) Find the magnitude of the magnetic field B21, in teslas, produced by line 1 at line 2.
Part (b) What is the direction of the magnetic field produced by line 1 at line 2?
V Correct!
South.
Part (c) Calculate the magnitude of the magnetic force F21, in newtons, that the current in line 1 exerts on line 2.
Part (d) Assume a typical power line has a mass of 890 kg per 1000 m. How many times larger would the current in both lines have to be for the
magnetic force on the line to balance the force of gravity?
I/IL =
sin()
cos()
tan()
7 8 9
НOME
cotan()
asin()
acos()
E 1^A 4
5 6
atan()
acotan()
sinh()
3
cosh()
tanh()
cotanh()
+
END
Degrees O Radians
VO BАСKSРАСЕ
DEL
CLEAR

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