Homework Statement
An LC circuit with an inductor of 4 microH is used as tuner for an FM radio. The capacitance required to tune into a radio stations of 100 MHz is most nearly what?
Homework Equations
w= 2pif = 1/sqrt LC
The Attempt at a Solution
I plugged in 4 microH into...
Homework Statement
A step down transformer has a primary to secondary ratio of 4:1. If the peak current in the secondary is 12 A, the peak current in the primary is what?
Homework Equations
Vp/Vs = Np/Ns
The Attempt at a Solution
(4/1) = (Ip/12 A)
what is the relation...
so here's what I did:
Kf+Vf = Ki + Vi
0+qv= 1/2mv^2+ 0
qv= .5mv^2
(1.6*10^-19)(v)= (.5)(1.67*10^-27)(3*10^6m/s)
v= .01565
V= kQ/R
.01565= (9*10^9)(1.6*10^-19)/(R)
R= 9.2* 10 ^-8 m
but then I did this:
leaving q = 1.6*10^-18 and changing Q= 1.6 *10^-19 [ proton charge] and then solving...
So when I plugged in 1 *10^-19 C [charge of proton] I ended up with 9.2*10^-6 m which was not even an option on the multiple choice. I am confused, please help. If this helps the answers are:
1.9* 10^6m
3.1*10^-13m
5.5*10^-7 m
9.2 *10^-7 m
Homework Statement
A proton is accelerated to 3*10^6 m/s and heads towards a spherical charge distribution having a charge of 1.6*10^-18 C. Approximately how close to the distribution does the proton travel before stopping? (Assume inital potential energy of proton is zero).
Vi= 0
Q=...