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There are sites on what percent of trees, etc., that you can cut back before you risk its life. I have the same problem and my neighbors are jerks, but more specificallythey suffer from the sense of entitlement that a...

Look up freezing point vs. antifreeze concentration. For cars with A/C they may recommend a 50% mixture. I avoid dealers like the plague.

Flexing is L/240, L360, or higher, the higher the less flexing. For L/360, if the span, L, is 36 'units' then the midspan deflection is 0.1 L. If L/360 is too bouncy then go to L/480 or higher. It depends on the modulus of elasticity for the material and the shape of the material. The...

Would you post a link to the specs on your electric mower?

Having just read two books on negotiation, I advise you, Mr. 11, to 'make your case' and two other cases. FIRST FOR YOUR NEIGHBORS, then for the government if they don't want to get involved, then for yourself. Try to see this from ALL angles to anticipate the arguments the other two...

On orders from their marketing departments the car makers may progressively decrease the switch contact capability until they get some serious lawsuits, then they apologize without admitting fault and then the skimping begins again, slowly. What the customer will put up with somewhat determines...

Over here, the law is that you 'are entitled to quiet enjoyment' of your place, whatever that means. And there are many volumes on Neighbor Law. I'll start here http://en.wikipedia.org/wiki/Right_to_Buy

By dividing the £ by the cc for several mowers & brands you can find out if this one is an 'outlier', either way more £ per cc or way less than the average. If you post your sample values, the more the better, I'll be glad to take a look. BTW, for lawnmower engines I get about 46 cc/hp but...

I have a feeling that Mr. 11 will not be amused. :(

I don't mind ignorance but there is a word that means something like 'defiantly & proudly ignorant' and it was possibly applied to a former US president.

Let's say it uses a switch mode supply so the max voltage on the capacitor is 230 x sqrt(2) = ~ 320vdc. You got >10 mA so your skin+body+skin resistance was less than 320/(>.01) < 32k. IIRC that is a plausible somewhat high value for dry skin. I think 3k is a commonly used value with 300...

Thanks, EricMark. AFAIK, it is a center-tapped 240v transformer secondary (the primary is in the kV range) and there is a Single Point Ground at the panel where the neutral lead and the ground lead are connected to earth. The transformer is right outside so we get 122v pretty consistently...

Good point.

@EFLImpudence, look up accelerated life testing. One way to do MTBF is to test many, many light bulbs for a week or so and count the failures, then the MTBF is 168 hours/(# of failures). This method is not without controversy. MIL-STD-217 deals with reliability and according to...

Well, you are the first, and for the most part I have enjoyed the British. Thanks. :)

There is at least one way this can be tested.

I believe you felt a shock but I don't see how it is possible. From your description you might have gotten more than 10 mA. Was your skin wet? Post a schematic - I suppose there could have been a part failure in the coffee maker. If you save the maker and have a multimeter and some...

The helicopter has a tiny capacitance to ground and so there will be AC current flowing in an arc between the heli and the line. The current may not be enough to be fatal but from the look of the arc that I've seen drawn it looks to be pretty nasty. To figure the capacitance you need to know...

A: I was the wrong gender.

We sold these keys for twice what the others went for. Football teams' logos were on them, slogans, etc. Maybe half the customers went for these.