Can I Use My Calculator for the Upcoming Physics Exam?

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Homework Help Overview

The discussion revolves around understanding the application of the right-hand rule in electromagnetism, particularly in relation to forces acting on charged particles in magnetic fields. Participants are exploring concepts related to the direction of forces, magnetic fields, and current flow in various scenarios, as presented in specific physics problems.

Discussion Character

  • Conceptual clarification, Assumption checking, Exploratory

Approaches and Questions Raised

  • Participants are attempting to clarify the application of the right-hand rule to determine the direction of forces and magnetic fields. Questions arise about how to align hand positions correctly and the implications of different orientations of velocity and magnetic fields. Some express confusion about the relationship between current direction and the resulting magnetic field.

Discussion Status

There is an ongoing exploration of the right-hand rule and its application in specific problems. Some participants are seeking clarification on the basic principles, while others are discussing the nuances of applying these principles in different contexts. Guidance has been offered regarding the visualization of forces and fields, but no consensus has been reached on all points raised.

Contextual Notes

Participants are working within the constraints of specific physics problems, which may involve assumptions about charge movement and field directions. There is a noted confusion regarding the interpretation of problem statements and the application of learned concepts in practical scenarios.

  • #61
All right i need a CLarifcation on this one
http://online.physics.uiuc.edu/cgi/courses/shell/phys102/fall06/prep2a.pl?practice/exam2/sp06

Question 21


The angle i pick should be what to the field line? i wanted to do 90-22.5 but that won't work. Thanks a lot
 
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  • #62
Last Problem then I am off to exam, Thanks Olderdan and whoever else that helped me. Really appreciate it

http://online.physics.uiuc.edu/cgi/courses/shell/phys102/fall06/prep2a.pl?practice/exam2/fa05


Question 8
 
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  • #63
Alt+F4 said:
All right i need a CLarifcation on this one
http://online.physics.uiuc.edu/cgi/courses/shell/phys102/fall06/prep2a.pl?practice/exam2/sp06

Question 21


The angle i pick should be what to the field line? i wanted to do 90-22.5 but that won't work. Thanks a lot
Rotate through the small angle from the direction of v to the direction of B. It is just 22.5
 
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  • #64
Alt+F4 said:
Last Problem then I am off to exam, Thanks Olderdan and whoever else that helped me. Really appreciate it

http://online.physics.uiuc.edu/cgi/courses/shell/phys102/fall06/prep2a.pl?practice/exam2/fa05


Question 8
Flux is
Φ = BAcosθ where θ is the angle between the loop normal and B. θ = 30 degrees

The only thing changing is B, so

dΦ/dt = (Acosθ)dB/dt
 
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  • #65
Can't you take the exam for me?
 
  • #66
Alt+F4 said:
Can't you take the exam for me?
What exam are you taking? Could I bring all my reference materials with me? I still remember how to do this stuff, but it sure is nice having the references readily available when you don't remember the exact formulas, values of constants, etc.
 
  • #67
OlderDan said:
What exam are you taking? Could I bring all my reference materials with me? I still remember how to do this stuff, but it sure is nice having the references readily available when you don't remember the exact formulas, values of constants, etc.
nope no refrence but u could program ur calculator. I am takin physics exam in like 2 hrs.
 

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