Homework Statement
Today, my teacher gave us some practice AP multiple choice and my friend and I were debating between answer choices H and J (changed from A and B to remove any confusion) the question as i remember it:
blah blah... B-field into the page, constant velocity v, radius R and...
Homework Statement
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Homework Equations
∫E.dA = Qenc/\epsilon_{o}
\lambda=Q/L
\rho=Q/V
V= q/4πε_{o}r
The Attempt at a Solution
these types of problems i suck at, i don't know how to do these at all independently, and is there any difference in question 2 if there...
im no expert at this stuff but when i was practicing for the SAT i would take off a small chunk of time from the allotted time. for example, if a section is 25 mins 24 questions, i would give myself 20 mins for 24 questions.
overtime i was able to get faster. on test day, i finished the...
this is how i do it
1. try to solve the problem as long as possible without going to the solution
2. go ask somebody for helping hints and try again
3. look at solution understand what is going on
4. try the problem again
First off, sorry for wrong location of post. I am wondering what kind of stuff you guys do in college physics. Is it similar to AP Physics? What should I expect in the Biochemistry Major, I was looking at the suggested courses on my future college's website and I think it was something like Gen...
Homework Statement
Figure 29-36 shows a rectangular, 15-turn coil of wire, 10 cm by 5.0 cm. It carries a current of 0.90 A and is hinged along one long side. It is mounted in the xy plane, at an angle of 30° to the direction of a uniform magnetic field of 0.50 T. Find the magnitude and...
ok i just redid my loops I am not sure what is going wrong
1) 2-1.5(i1)-2.5(i2)-3.5-1.5(i1)=0
2) 3.5-2.5(i2)-1.5(i3)-3.5-1.5(i3)=0
3) 2-1.5(i1)-1.5(i3)-3.5-1.5(i3)-1.5(i1)=0
1) -.6-1.2(i1)=i2
2)-.833(i2)=i3
3)-.5-i3=i1
ok so i set up 3 loops and after simplifying i get:
Loop 1(the square on the left):-.6+1.2(i1)= i2
Loop 2(right square): 2.5(i2)=1.5(i3)
loop 3(the whole rectangle): 1.5=-3(i1+i2)
and that i1 = i2+i3
circuit help -- resistors and batteries in a network
Homework Statement
(a) Calculate the current through each ideal battery in Fig. 28-41.
(As a sign convention, assume the currents are "up" through each battery.)
A (I1)
A (I2)
A (I3)
Assume that R1 = 1.5 , R2 = 2.5 ...
Homework Statement
Two tiny metal spheres A and B of mass mA = 3.40 g and mB = 3.90 g have equal positive charges q = 4.50 µC. The spheres are connected by a massless nonconducting string of length d = 1.00 m, a distance that is much greater than the radii of the spheres.
(a) What is the...