Hi, thank you for the reply.
The negative sign in 1/(-1/3Do) is from this equation M=Hi/Ho= -Di/Do
Where Di is negative, getting Di on its own I have 0.2/0.6=-Di/Do----> 1/3*Do=-Di multiply both sides by -1 to get -1/3Do=Di
I then plugged the negative 1/3Do into 1/Di in the mirror equation...
Homework Statement
In front of a spherical concave mirror of radius 39cm, you position and object of height 0.6cm somewhere along the principal axis. The resultant image has a height of 0.2cm, How far from the mirror is the object located?
What if this were a convex mirror with the same radius...
Homework Statement
Two spaceships are traveling with a relative velocity of 1.2x10^8 m/s, both carrying clocks.
According to the captain of each ship, the other captains clock ticks more slowly than his own. By what factor do the clocks disagree?
Homework Equations
1/(1-(v^2/c^2))^1/2
The...
My apologies, I will edit the OP. I1 is 8.2A, I2 is 9.3 A, and the distance between the two is 0.088m.
The charge is moving right, and its original location is to the right of i2, at a distance of 0.053cm from I2
Homework Statement
Two long, straight wires with a current of 8.2A on the left and 9.3A on the right flowing in the same direction. The distance between the wires is 8.8 cm.
a) What is the magnitude of the force per unit length between these two wires both in length and direction
b) How far to...
Well.. yes but isn't the voltage for the two second loops going to be less due to the voltage drop from the first resistor?
and also I'm not seeing how I can get 3 unknowns... I would still have to worry about the 7.9 ohm resistor and 7.7ohm resistor
Homework Statement [/B]
http://imgur.com/Kq5e4Ka This is the circuit I need to find the Req for, the only things given are the Voltage of 7.1, and the resistance of each circuit.
Homework Equations
V=IR
Kirchhoffs laws, the KVL and KCL.
The Attempt at a Solution
I have spent some time...
Ah, okay... that makes sense, unfortunately this is an algebra based class I am taking and my own personal ability at integrating is limited.
I am using Coulombs constant for k, at 9x10^9.
I rechecked my math and I have rounding error, carrying the equation through with my calculator I get a...
So I could simply calculate the distance traveled, being 1.2m by multiplying it by the force interacting between the two charges ( using the formula F=k(q1q2)/r^2?
Using W=F*d I get 4.68x10^26
If I use the other method, being position initial-position final (which would have lower PE) , it...
Homework Statement
Suppose you want to move two charges apart, both are equal charges of opposite sign at 1.4x10^9C, and their starting position is 6.7m apart, how much work would it take to further separate the charges to a final distance of 7.9m, that is, move them 1.2m
Homework Equations...