Q:A 41.7-kg sign is suspended by two wires, as the drawing shows. Wire 1 makes and angle of 42.2deg with the horizontal and wire 2 makes an angle of 58.8deg. Find the tension in wire 1 and wire 2.

To solve this, you have to find 2 equations, because there are 2 unknowns. Assume, Tension in wire 1 = T1 Vertical component of T1 = T1 sin42.2 Horizontal component of T1 = T1 cos42.2 Tension in wire 2 = T2 Vertical component of T2 = T2 sin58.8 Horizontal component of T2 = T2 cos58.8 Since the sign board is in equilibrium, the forces must balance each other. Horizontally, the horizontal components of both forces are balancing each other. Therefore, T2 cos58.8 = T1 cos42.2 T2 = (T1 cos42.2) / (cos58.8) -------------------(1) For the vertical components of the wire, both are balancing the weight of the sign. T1 sin42.2 + T2 sin58.8 = (41.7)(9.8) T1 sin42.2 + T2 sin58.8 = 408.66N ----------------(2) Combine (1) into (2), T1 sin42.2 + (T1 cos42.2)(sin58.8) / (cos58.8) = 408.66 T1 ( sin 42.2 + cos 42.2 tan 58.8) = 408.66 T1 = 215.66N Subst T1 = 215.66N into (1), T2 = (T1 cos42.2) / (cos58.8) = 308.4N Hope it is correct ^^

Q:i already tried wiring this light, but it didn't work. I always thought black wire to black, white to white and ground to ground. i connected the light fixture black wire to the three black wires (as shown in image) and the light fixture white wire to the three white wires, and connected ground wires together.when i flipped on the breaker, the light came on with the switch on off and the breaker tripped. i'm assuming this is wrong and i provided an image as i see in my ceiling mount. Can somebody kindly direct me how to properly connect the light fixture to these wires. thanks!

This should have worked. Any chance you have one of the black wires touching the side of the box or one of the white or ground wires? If the fixture that was removed worked before the new one should work now. Also check that one of the screws holding the fixture didn't touch one of the black wires when you tightened it. .

Q:How are wired differ from wireless doorbells,next how are they installed and finally the cost of them?

just remember that while wireless may cost less, you have to have a wire from the outside button to the door bell itself and then you still have to have a way to power it. i have the wireless, it's idiot proof. a couple of batteries and your off and running. standard batteries like D's and maybe AA's good luck to ya. you can get a good variety at home depot or lowe's

Q:My dad is trying to wire a electric cook top...it has three wires (black, red, and copper). His junction box has four wires (black, red, white and copper). He first wired the black to black, red to red and copper to copper, he capped the white wire in the junction box. The cook top did not work. Then he connected the white wire with the two copper wires, and the cook top now works. So the question is will this connection work or will it cause a problem? And if it causes a problem what can he do to resolve it?

What he did was correct to ground the white wire. You're good to go.

Q:My house is wired for surround sound. The wires coming out of the speakers holes are not labeled as far as i can tell but the wires that are coming out of housing that go into the back of the receiver are labeled 26,27,30,and 31. I cant tell which wires go to which speaker Front Left, Front Right, Rear left or Rear Right. Do these numbers mean anything?

Nope, sorry. You should be able to hook all the speakers up and plug one wire into the receiver at a time. It may take a few min, but it shouldn't be too hard to figure it out.

Q:When I am wiring my sub to my amp, what gauge of wire should I use? The sub is 750 rms and the amp is 700 rms. And how do I wire a 2 ohm sub DVC to a 2 ohm stable amp?

I would use 12 gauge wire. You want to hook the positive wire from your amp to one coil's positive, and the negative to the other coil's negative and then make a jumper to connect the other two posts to each other. Hope this helped

Q:I am building an ice chest boombox and want to wire a toggle (on/off) switch to turn the amp on and off....the amp is wired directly to the battery....my question is that I am using 6 gauge wire....but can't find any female spade connectors that are 6 or even 4 gauge to hook to the terminals on the switch.....what is a simple way to do this....am I going to have to solder the wire straight to the terminals?

Why not wire the toggle switch into the remote + wire? The one that turns the amp on and off with the head unit. 7/5/2013**** Leave the power supply wire alone. The thick 4 gauge wire that runs from the battery directly to the amp, leave it alone, don't put a toggle switch inline on that wire. Instead there's a wire from your head unit (or ignition) that runs to your amp, it turns on the amp when the head unit turns on or your ignition key is in the on position. It's usually 16 or 14 gauge. That's the wire where the toggle switch belongs. Look at your amp, this wire I am speaking of is probably labeled remote+ or ign or something like that and it's usually located next to your power and ground connections on the amp.

Q:I need a wiring guide or diagram for the stereo of a 2005 ford taurus. somethig that will show which wires are for front and rear speakers, and the remote start wire

if you are installing a radio you dont need that the wires should match and they have codes to match written on them

Q:I am looking for some answers when it comes to soldering wires. Lets say I am using 6 to10 (22 AWG 2 conductor wires) and I want to solder those to 1 wire for power source and 1 wire for ground. Now lets say soldering 10 wires to 1 wire for power and 10 wires to 1 wire for ground. All the wires are the same AWG guage. Now that the wires are twisted together and soldered to the hot and ground source, by doing this will I actually make a resistor or change the amperage or reduce the voltage by soldering so much wires together to a 1 wire source? The power source I am using is 12 Volts. If anyone knows of anywhere I can find this information online, etc, I would appreciate it.

The amount of wires won't create a resistance or change the current. The devices and the power consumption of each will affect current. How do you think a car fuse panel works? Many fuses (connections) all come from the same positive wire on the car battery. The battery provides well enough current for every device to be turned on (for a period of time) and no device will suffer from lack of current. ____________________________ Resistors are what limit the current to LEDs. The only way to exceed the wattage of a resistor is to short out the LED.

Q:I have a kicker cvr 12 inch 2 ohm dual voice coil sub (400 watts) and a kicker zx750 amp. how to wire?

wire it in series so you get a 4ohm load. not unless you could still return the sub and get the cvr with dual 4ohm voicecoils. then you can wire that in parallel to 2ohms and get the most out of your amp.