This is due 4/05/2024 at 11:59 pm.

Please answer the following questions.  There is no online homework this
week.


Volume 2, Chapter 11, Problems 15, 17, 21, 25, 30, 33, 36, 61

The TA may work #15 (which you also have to do),  22 (a little harder than
21) 26 (similar to 25),  31  (similar to 30)   33 (you also)  37 (similar
to 36) in recitation. 

I am only giving written HW this week.  It is the chapter on Magnetic
Fields.  They have an exam on Tuesday so you will have to teach some things
that I did not get to.
I showed them F = q v x B and F = I L x B.  We practiced the right hand
rule  I told them that B = phi-hat mu0 I / 2 pi r for a long wire without
explaining why.  We derived F = I1 I2 L / 2 pi r for force between two
wires.

While I mentioned the cross product, I did NOT talk about what happens if
the field and current are not perpendicular.  Please explain the sin theta
relationship.  You MAY explain the determinant method, but I recommend
against.  I will not give any problems that need it.  On problem 31, part
"b" is about electron volts.  I did not explain electron volts, only
Joules.  You may choose to skip part "b", but definitely do part "c".  
Problems 30 and 31 are basically what they are doing in lab this week.  You
should mention that.  

I ALSO did not explain how a magnetic field forces a particle into a
circular orbit.  Do not bother discussing helices.  Just do circles.  
SPECIFICALLY, explain/derive equations 11.4, 11.5 and 11.6 from the book.