Homework Statement
In the circuit shown in the figure, R1 = 3.23 Ω, R2 = 5.19 Ω, R3 = 23.1 Ω, and V = 10.7 V.
a) Determine a value for the equivalent resistance.
http://img651.imageshack.us/i/p074figure.png/
Homework Equations
Parallel is 1/R1+1/R2+1/Rn=1/Req
Series...
It's the right coefficient, because it told what table in the book to use. It's probably the coding for the program. It's a new book we're using and my teacher thinks there might be mistakes.
Homework Statement
A copper coil has a resistance of 0.541 Ω at room temperature. What is its resistance when it is cooled to -131.3 °C?
Homework Equations
Ri=New resistance
R0=initial resistance
a=alpha
Ri=R0+R0(a(temp change))
temp change is positive when it goes up
alpha...
Using my first attempt
Vmax=6630 V
Then 3400=.5(C)(6630)^2
C=epsilon0*A/d=(8.854E-12)A/(.00221)=.000155
A=38613.1 m^2
Can you guys figure out what I'm doing wrong?
Homework Statement
A typical AAA battery has stored energy of about 3400 J. (Battery capacity is typically listed as 625 mA h, meaning that much charge can be delivered at approximately 1.5 V.) Suppose you want to build a parallel plate capacitor to store this amount of energy, using a plate...
A 29 kg object is acted on by a conservative force given by F = (-2.4)x + (-5.2)x2, with F in Newtons and x in meters. Take the potential energy associated with the force to be zero when the object is at x = 0. What is the potential energy of the system associated with the force when the object...