If you ever have any spare cash (haha, who does?), you might look into getting one of those new jumper packs. They're only about $50 and then you don't have to wait around for a neighbor to help out.he said it sounds like it just needs a jump because it's too cold
It probably has to do with the metal heating up.I have a physics question, one I've been wondering about for years and never been able to find an answer to. But we have so many people here, with such varied backgrounds, that I thought I should ask.
Let's say it's the middle of the night and you wake up wanting a glass of water. You have a glass next to the sink; you know you can find it in the dark and you don't want to awaken your spouse by turning on a light (not to mention that you don't want to thoroughly wake up yourself, which turning on a light will do to you) so you find your way to the sink in the dark. You put your glass under the faucet and turn on the water, and you know when your glass is nearly full because the sound of the water rises in pitch as the glass gets fuller, so you don't even have to get your finger wet to tell when you have enough water. And no, "Why does the sound get higher as the water rises?" is not the question; that would be too easy. I already know the answer to that one; it happens because you're hearing the vibration of the air inside the glass and as the water level rises the size of the air chamber gets smaller so the frequency rises, just like when you play a wind instrument. Blind people have used this trick for a very long time.
But now, suppose that as soon as you get out of bed to get your water you realize that it's cold in your house. You don't want a glass of cold water; you want warm or hot water. So when you get to the sink you turn on the hot tap and wait for the water from the heater to push enough of the cold water that's already in the pipes out so that the water starts coming out of the faucet hot. And surprisingly enough, you can also do this by ear. The water changes pitch when it starts running hot. Does anyone know why this is?
Note: I have observed this phenomenon in every faucet in our house, so it isn't something strange about one faucet, and I've noticed it both before and after we replaced our water heater with a newer Energy Star rated water heater, so it isn't something to do with the water heater.
Margret
You did your best. That's all anyone can ask.
So, John's manager said I can't go into labor tonight because she doesn't want to work the register. Now I want to just to spite her.
Clearly, I'm very grumpy tonight. But still. It's not like I have any control over it anyway.
So it is in fact, the density of the water. Interesting.I just read something like that, on Daily Mail or something like that. . .I'll see if I can find an actual scientific explanation .
Ah, here it is: "The reason for it is that water changes its viscosity - its stickiness - according to its temperature. . .(whole bunch of science). . .when you heat the water up, the particles start to move much more quickly. They have more kinetic energy which is a function of the temperature. This means that they're zipping past each other much faster. They're therefore gluing onto each other less well and this makes the water runnier or less viscous."
Why does hot water sound different to cold water when poured? | Science Questions | Naked Scientists