# Recent content by mikil100

1. ### Mirrors and Lenses equation

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...
2. ### Mirrors and Lenses 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...
3. ### Special Relativity and time dilation

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...
4. ### Magnetism: Forces between two parallel wires

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
5. ### Magnetism: Forces between two parallel wires

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...
6. ### Electric Circuit Analysis

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
7. ### Electric Circuit Analysis

Sorry, I should have showed that.. 11R+2.1R+6.0R=7.1 I'm not sure the same can be said for the other two loops though?
8. ### Electric Circuit Analysis

So make 11R, 2.1R, 6.0R one loop for the left side and for the right two boxes and for the left 2.1R, 2.3R 7.9R 2.3R, 6.0R 7.7R?
9. ### Electric Circuit Analysis

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...
10. ### Work needed to move opposite charges farther apart

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...
11. ### Work needed to move opposite charges farther apart

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...
12. ### Work needed to move opposite charges farther apart

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...