Solving Problems 4 & 7 from EM4WS5 PDF

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Problems 4 and 7 from the EM4WS5 PDF require specific solutions related to physics concepts. The original poster seeks assistance in solving these problems, indicating that they are helping a friend who struggles with computers. There is an emphasis on the need for the original poster to put in more effort to find the answers. The discussion highlights the importance of understanding the material rather than just obtaining solutions. Engaging with the problems directly is encouraged for better comprehension.
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Homework Statement



problems 4 and 7 from this pdf

http://www.daisleyphysics.com/y2p/worksheets/em4ws5.pdf


Homework Equations





The Attempt at a Solution


A friend of mine is bad with computers and she asked me to help find the answers.
 
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A bit more effort on your part is needed.
 

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