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How to knit a purl stitch rug?
- I don't think a purl stitch rug is a standard thing that would have a video. It sounds like a design made specifically for that book. The thing is, there is no need to purl a whole rug when it is generally easier to knit than to purl, and a purl is just the back side of a knit stitch. So you could knit the whole thing in whatever shape you like and just turn it over to have a purl stitch rug.s
If ig(t) 0.5 cos 2000t A, find the average power absorbed by each element ((a) 130-Ω resistor, (b) 40-Ω resistor, (c) source, (d) inductor?
- Let's just go through it the straight way. You know, from your source, that: ω 2000 Ip ½A, ∴ Irms Ip ⁄ (√2) You can compute the reactance of your capacitor (C12.5μF) and inductor (L60mH) as: XC 1 ⁄ (ω⋅C) 40Ω, ∴ Z̃C -40j XL ω⋅L 120Ω, ∴ Z̃L 120j Let's say that: R₁ 130Ω R₂ 40Ω You have two parallel legs, each with a series pair of devices. The total impedance is in the capacitive leg is: Z₁ R₁ + Z̃C 130 - 40j, ∴ |Z₁| 10√185 In the inductive leg it is: Z₂ R₂ + Z̃L 40 + 120j, ∴ |Z₂| 40√10 So the total parallel impedance of these two legs is: Ztot Z₁⋅Z₂ ⁄ (Z₁ + Z₂) 200⋅(141 + 79j) ⁄ 353 ∴ |Ztot| ≈ 91.57112 You know that: Vrms Irms ⋅ |Ztot| Irms₁ Irms ⋅ |Ztot| / |Z₁| Irms₂ Irms ⋅ |Ztot| / |Z₂| P₁ Irms₁²⋅R₁ (Irms ⋅ |Ztot| / |Z₁|)² ⋅ R₁ 7¹²⁹⁄₃₅₃ W ≈ 7.365 W P₂ Irms₂²⋅R₂ (Irms ⋅ |Ztot| / |Z₂|)² ⋅ R₂ 2²¹⁹⁄₃₅₃ W ≈ 2.620 W Ptot P₁ + P₂ 9³⁴⁸⁄₃₅₃ W ≈ 9.986 W Real power isn't dissipated in ideal capacitors or inductors, so (a) ≈ 7.365 W, (b) ≈ 2.620 W, (c) ≈ 9.986 W, (d) 0 W, and (e) 0 W. Since the problem you show doesn't illustrate VAR units on it, I don't think (d) and (e) should use reactive power. P₁ Irms₁²⋅R₁ (Irms ⋅ |Ztot| / |Z₁|)² ⋅ R₁ 7¹²⁹⁄₃₅₃ W ≈ 7.365 W P₂ Irms₂²⋅R₂ (Irms ⋅ |Ztot| / |Z₂|)² ⋅ R₂ 2²¹⁹⁄₃₅₃ W ≈ 2.620 W The above was validated with Spice.s
How many meters does the LED flash band need? A controller?
- Different LED lights LED number is not the same, the power will not be the same, the general number of led more, the whole LED light belt power is greater, the controller can bear the length will become shorter!Generally speaking, if the number of LED in your Flash belt is 60, 0.2w/led., then the meter is 12W, and the 10 meter is 120W.The controller is used for receiving signals, and the number of meters does not matter. As long as there is sufficient switching power supply to the lamp band, it is possible to meet the power requirements of the parallel light band. Or, in a certain range of load, you can then connect the signal amplifier, you can use a controller to connect the effect of numerous lights!In addition, the general controller will be equipped with wireless remote control, remote control can control the scope of the band is the main factor to limit the length of the band!s
Help! Recipe calls for Wax Paper! What can i use instead?
- I would probably crochet a throw rug rather than knit, but if you're determinedDefinitely use a chunky weight or extra bulky yarn, or use 3 strands of worsted weight togetherUse size 15 or larger knitting needles - circular if you can get them if you're going to make a fairly large rug.s
How does the hydraulic brake system in a car work?
- OK with Howdy, good chocolates in Torres + a mug from Zabar's, 4 bucks, it's a small gift from NYCs
If there are micro voids in a plastic component, would that be considered as a manufacturing fault?
- UTI. Go to the doctor and get some antibiotics to treat that sucker before it gets worse.s
what is found in plasterboard aicd, base, salt?
- Gypsum's solubility in water is quite limited and is also retrothermal, but it would be slightly basic. As a solid, it is technically calcium sulfate dihydrate, a hydrated salt.s
How can I choose the ceiling lamp? What are the conventional models?
- Suction power should be mainly lamp size and lamp room in the choice of matching,s