A long, straight wire carries a current I (Fig. OQ30.8). Which of the following statements is tine regarding the magnetic field due to the wire? More than one statement may be correct, (a) The magnitude is proportional to I/r, and the direction is out of the page at P . (b) The magnitude is proportional to I/r 2 , and the direction is out of the page at P. (c) The magnitude is proportional to I/r , and the direction is into the page at P. (d) The magnitude is proportional to I/r 2 , and the direction is into the page at P. (e) The magnitude is proportional to I , but does not depend on r .
A long, straight wire carries a current I (Fig. OQ30.8). Which of the following statements is tine regarding the magnetic field due to the wire? More than one statement may be correct, (a) The magnitude is proportional to I/r, and the direction is out of the page at P . (b) The magnitude is proportional to I/r 2 , and the direction is out of the page at P. (c) The magnitude is proportional to I/r , and the direction is into the page at P. (d) The magnitude is proportional to I/r 2 , and the direction is into the page at P. (e) The magnitude is proportional to I , but does not depend on r .
Solution Summary: The author explains that the magnetic field due to the straight wire is proportional to Ir and the direction is out of the page at P.
A long, straight wire carries a current I (Fig. OQ30.8). Which of the following statements is tine regarding the magnetic field due to the wire? More than one statement may be correct, (a) The magnitude is proportional to I/r, and the direction is out of the page at P. (b) The magnitude is proportional to I/r2, and the direction is out of the page at P. (c) The magnitude is proportional to I/r, and the direction is into the page at P. (d) The magnitude is proportional to I/r2, and the direction is into the page at P. (e) The magnitude is proportional to I, but does not depend on r.
What fuel economy should be expected from a gasoline powered car that encounters a total of 443N of resistive forces while driving down the road? (Those forces are from air drag, rolling resistance and bearing losses.) Assume a 30% thermodynamic efficiency.
No chatgpt pls will upvote
12. What is the angle between two unit vectors if their dot product is 0.5?
Chapter 30 Solutions
Physics for Scientists and Engineers, Technology Update, Hybrid Edition (with Enhanced WebAssign Multi-Term LOE Printed Access Card for Physics)
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