Resolving Questions - Elements of Electromagnetics Sadiku Chapter 4

Thread starter feras
Start date Dec 10, 2008

AI Thread Summary

The discussion focuses on seeking assistance with questions from Chapter 4 of "Elements of Electromagnetics" by Sadiku. Participants are encouraged to first attempt the problems independently before requesting help, as per forum guidelines. A link to a related thread is provided for additional context and resources. The emphasis is on collaborative learning and problem-solving within the community. Engaging with the material and demonstrating effort is crucial for receiving support.

Dec 10, 2008

feras

Please help resolve questions

http://www.feras1.com/phy.jpg

Of the book, elements of electromagnetics-sadiku, 3rd ed chapter 4

Last edited by a moderator: May 3, 2017

Physics news on Phys.org

Dec 10, 2008

Redbelly98

Staff Emeritus

Science Advisor

Homework Helper

Insights Author

If you'd like help with these, please read this:
https://www.physicsforums.com/showthread.php?t=94379

Dec 11, 2008

feras

please i want soluation

Dec 11, 2008

Redbelly98

Staff Emeritus

Science Advisor

Homework Helper

Insights Author

You'll need to follow the forum guidelines in order to get help. Show what you have attempted yourself first. That is how we do it here.

Thread 'I've come across another fluid pressure problem I don't understand'

Neglect gravity other than that of water; neglect friction. F1=ρgsh=1000*10*1*(1+4)=50000 N; F1=ρgsh=1000*10*0.1*4=4000 N; F3=50000-4000=46000 N?

View full post »

Thread 'Struggling to understand the concept of this question (ice cube in water optics question)'

TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...

View full post »

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...

View full post »