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FAQ

Two wires are made of the same material but the second wire has twice the diameter and twice the length of the first wire. When the two wires are stretched, and the tension in the second wire is also twice the tension in the first wire. the funamental frequency of the first wire is 880 Hz. What is the fundamental frequency of the second wire?

Since the tension and size are different the two wire will have different wave speeds Since v= sqrt(T/mu) mu can be represented by density * area Since the second wire has twice the diameter it will have 4 times the mu and since Tension in wire 2 is twice that in wire 1 v2 = sqrt(2T/4mu) sqrt(.5)*v1 = 0.707*v1 Since f1 (wire 1) = v/2L1 then f2(wire 2) = v2/2L2 so replacing v2 and L2 yields 0.707v1/(2*2*L1) = 0.707/2(v1/2L) = 0.707/2 *f1 = 0.707/2*880Hz = 311Hz

im hooking up a air/fuel tomorrow and i need to know what color the wire for the sensor signal is on my rt... i have 4 wires and heres the colors and were they are from. t/w or o/t from c124 b/lbl from c14 and c315 b gound and o/dg from fuse a... need answer thanks

It should be the BLK/ LB wire (although my wiring schematic shows that wire BLK/ GREEN), It will be the only circuit that have a varying voltage between 0-1 volt. Probe the wires with a DVOM and determine which wire has the signal, one wire will supply B+ for the heater, one is heater ground, one is reference supply voltage and one is signal return The signal return is the circuit you need to tap.

Its a 3 wire chandelier, 2 are attached like a regular electric cord and the third is separate. all are the same color. the ceiling has 2 wires. one tan/white and the other is red. I am comfortable with doing the connections but unsure what wires to connect

One of the chandelier wires will go to the red and the other to the white wire--it does not matter which one goes to which. The third wire is likely bare (or green) and is a ground wire. Connect this wire to the ceiling box and to the third wire in the ceiling if there is one.

I am replacing old 3 button (vertically aligned) light switch. There is 1 thick wire wrapped in white, 1 thick wire wrapped in black and 4 thin wires wrapped in black. I attached the white wire to the common wire screw and put the remaining wires around the screws. I am also replacing a toggle switch that will control the vanity lights above the sink. There are 4 clumps of wire coming through the box. The copper grounds are all twisted together, and there are multiple strands of white covered wire twisted together and then the 5 black cover wires and 1 white covered wires. After hooking it all up, it doesn't do anything. No lights, fan or heat lamp. What did I do wrong?

Light Switch Common Wire

when u first get braces do they put the bands and the wire or just the bands cuz im getting them monday

Do you mean the wire that connects the braces together? Because in that case if you need bands they will do both or if not it will just be the wire.

When it is time to replace wiring in a building?

Some places require a re-wiring of a home if you replace the main service panel and the wiring is old, such as post and wrap or two conductor. In general, unless you have very old wiring, have had a fire, or need to upgrade your power availability in a room, you will not need to replace the wire. And my advice, if you have ANY post and wrap, or cloth insulated two-wire, get it replaced. That stuff is a fire hazard, as the rubber and cloth in those kinds of wires breaks down after decades, and can allow arcing to occur. Which can lead to a house fire.

I have a wire coming from the car battery positive terminal. It is 12v DC. I want to split this wire to two other wires. I cannot connect another wire to the positive terminal. Will splitting this wire cause the voltage to drop to 6v each wire? or will they pull a constant 12v each?

SAME 12V ON BOTH WIRES.

Someone Stole my stock radio out of my car (They cut it out) Now All i have in the is wires and I cannot afford to go get a new one installed.Here are the wires that are in my car

Here's your audio wiring layout: Car Radio Battery Constant 12v+ Wire: Yellow/Green Car Radio Accessory Switched 12v+ Wire: Orange/Green Car Radio Ground Wire: Black/Green Car Radio Illumination Wire: Orange/Black Left Front Speaker Positive Wire (+): White/Black Left Front Speaker Negative Wire (-): Gray/Black Right Front Speaker Positive Wire (+): White/Red Right Front Speaker Negative Wire (-): Gray/Red Left Rear Speaker Positive Wire (+): White/Green Left Rear Speaker Negative Wire (-): Gray/White Right Rear Speaker Positive Wire (+): White Right Rear Speaker Negative Wire (-): Gray