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 Yearling
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Mar
28
comment Amplitude of voltage from centre tap rectifier?
@JM97: Again, voltage and efficiency are two completely different things. And, efficiency of what exactly. Power out to power in? Power per cost? Space per power? In any case, all those are off the topic of this question, which is about voltage out of a tapped secondary.
Mar
28
comment Amplitude of voltage from centre tap rectifier?
@JM97: You seem to be confusing several concepts. You originally asked about voltage, but now you are talking about efficiency within the context of a larger circuit. That's a totally different discussion.
Mar
28
answered Mechanics of a falling cat
Mar
28
comment Oh-my-god particle: How can it get through Milky way in 10 seconds?
Note the all-important "from the proton's reference frame".
Mar
28
answered Amplitude of voltage from centre tap rectifier?
Feb
28
answered How can a voltage across a capacitor be greater than the total voltage applied to the circuit?
Feb
11
awarded  Yearling
Jan
18
comment If heat is energy, then why does cooling take energy when it should actually give energy?
@Min: For me it's easier to visualize that particular value in pounds per square foot or pounds per square meter. Anyone that prefers other units can convert as they like. That's what computers or calculators are for. However, grams per square meter is not a unit of pressure, so it's always wrong. If you want to stick to MKS units, use Newtons per square meter.
Dec
13
comment Confusion about two-force members
If that's what you want to know, then again, ask about that. Your question as it currently stands is all hung up about whether A-C is a "two force" member or not. Write the question properly about what the forces are at pin A or on member A-C, if that's what you really want to know. You also seem to be misreading the diagram, or at least jumping to a incorrect conclusion.
Dec
13
comment Confusion about two-force members
I though you weren't interested in the actual solution, but the semantics of "two force member". If you want help with the solution, ask about that.
Dec
13
comment Confusion about two-force members
It should be obvious that A-C only has two forces on it (other than gravity, since weights weren't given I'm assuming you're supposed to ignore this). It is in compression, so the pin at each end is pushing on the member in the direction of the other pin. Since A-C isn't accellerating, those two forces are equal and opposite. What's the problem?
Dec
13
comment Confusion about two-force members
I wouldn't get hung up on someone else's artificial classification of the problem. I hadn't hear the term "two force member" before, but what does that matter anyway? I don't know what the problem is asking for, but it is easily possible to solve for the forces on the pins, force on member A-C, force on the bottom support, etc. If you're stuck solving this problem, ask about that specifically.
Dec
2
comment Does the Nuclear reaction happen inside the fuel rods?
@james: Yes, what you say is more specific. I was deliberately trying to stay away from the details of moderators, hence "sortof convert".
Nov
28
answered How does this spool have an angular acceleration opposite to its acceleration?
Nov
26
awarded  thermodynamics
Nov
21
answered Can acoustic waves travel through human body?
Nov
18
comment Does the ring (in the picture) experience Lorentz force?
But that's only due to the many turns of the coil. Take a look at Maxwell's equations.
Nov
18
comment Does the ring (in the picture) experience Lorentz force?
Point 1 is misleading at best. A magnetic field is produce by moving charges. They don't need to be accelerating. A straight wire with steady current flowing thru it will have a magnetic field around it, proportional to the current, not the derivative of the current or anything else that would imply acceleration.
Nov
6
comment If heat is energy, then why does cooling take energy when it should actually give energy?
@user: Consider that here on the surface of the earth the atmosphere has a lot of pressure, over 2000 pounds per square foot or 23,000 pounds per square meter. So why can't you use it to push your car along the highway for free?
Nov
6
answered If heat is energy, then why does cooling take energy when it should actually give energy?