What is the question really asking? Just understanding the question

  • Thread starter Thread starter Ashley1nOnly
  • Start date Start date
AI Thread Summary
The discussion centers on confusion regarding a homework problem involving a circle, rectangle, and square. Participants suggest that the additional shapes may be extraneous information meant to complicate the question. The focus should be on using the area of the square and the changing magnetic field to determine the induced voltage, followed by calculating the current using resistance. Clarification is provided that the problem likely misrepresents the shapes, as a circle is not present, and a square is essentially a rectangle. Understanding the core elements of the problem is essential for finding the solution.
Ashley1nOnly
Messages
132
Reaction score
3

Homework Statement


I'm having trouble understanding what the question is asking. It has a circle, rectangle, and square all in one problem. I don't want help solving this problem.

Homework Equations


upload_2017-2-24_16-10-38.png


The Attempt at a Solution

 
Physics news on Phys.org
Ashley1nOnly said:

Homework Statement


I'm having trouble understanding what the question is asking. It has a circle, rectangle, and square all in one problem. I don't want help solving this problem.

Homework Equations


View attachment 196728

The Attempt at a Solution

I think they are just giving you extra information to try to confuse you. Just use the area of the square loop and the changing B field to calculate the induced voltage, and then use the resistance R to calculate the resulting current. I don't think you use the variable r, but I guess I could be missing something.

What are the Relevant Equations for working this problem?
 
It smells to me like the question has been created by copying an old question (which maybe did concern a loop) and modifying it incompletely.
 
Ashley1nOnly said:
I'm having trouble understanding what the question is asking. It has a circle, rectangle, and square all in one problem.
There is no circle: what is given is the radius of the wire, not the loop. And a square is simply a special case of a rectangle.
 
  • Like
Likes Ashley1nOnly
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}...
I was thinking using 2 purple mattress samples, and taping them together, I do want other ideas though, the main guidelines are; Must have a volume LESS than 1600 cubic centimeters, and CAN'T exceed 25 cm in ANY direction. Must be LESS than 1 kg. NO parachutes. NO glue or Tape can touch the egg. MUST be able to take egg out in less than 1 minute. Grade A large eggs will be used.
Back
Top