Recent content by mgrantbaker
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Solving 2D Elastic Collision Problem in Physics
Came across this one in my freshman physics book: A particle of mass 1m is traveling along the x-axis at velocity V1. It collides elastically with a second particle of mass 3m traveling at velocity V2. The first particle (1m) moves off at 0.92m/s at 48º to the x-axic. The second particle (3m)...- mgrantbaker
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- 2d Collision Elastic Elastic collision
- Replies: 1
- Forum: Introductory Physics Homework Help
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Undergrad Ampere's Law and partial-circular wires.
Great. Thanks, Doc Al & jtbell. That pretty much clears it up.- mgrantbaker
- Post #8
- Forum: Electromagnetism
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Undergrad Ampere's Law and partial-circular wires.
Let me try to better explain my thinking. Break the wire into infinitesmially short segments length d_theta, so that each segment approximates a straight wire with a radially symmetric magnetic field. Calculate the magnetic field dB, as resulting only from segment d_theta, using Ampere's...- mgrantbaker
- Post #4
- Forum: Electromagnetism
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Undergrad Ampere's Law and partial-circular wires.
Why can't I use Ampere's law to compute the magnetic field at the center (P) of a semi-circular wire? If I calculate B at P due to d_theta, and then, using superposition, integrate from 0 to pi, the result is B=uI/2R. Biot-Savarte law gives the correct answer of B=uI/4R.- mgrantbaker
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- Ampere's law Law Wires
- Replies: 7
- Forum: Electromagnetism