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| bio | website | |
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| location | ||
| age | ||
| visits | member for | 2 years, 5 months |
| seen | Apr 14 at 14:16 | |
| stats | profile views | 131 |
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Apr 11 |
awarded | Revival |
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Feb 21 |
awarded | Popular Question |
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Feb 11 |
awarded | Enthusiast |
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Feb 9 |
accepted | When driving uphill why can't I reach a velocity that I would have been able to maintain if I started with it? |
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Feb 9 |
comment |
Quantum dimension in topological entanglement entropy @nervxxx - I'm happy to help and I welcome any questions |
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Feb 8 |
revised |
Quantum dimension in topological entanglement entropy added 2 characters in body |
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Feb 8 |
answered | Quantum dimension in topological entanglement entropy |
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Feb 8 |
comment |
When driving uphill why can't I reach a velocity that I would have been able to maintain if I started with it? I understand that this can get very complicated, but a lot of times even in complicated problems there is some simple principle that catches the main effect. @yohBS describes such a principle in his answer, but I'm not completely sure it's correct. So I'm accepting his answer for now, but I'm still open to criticism on this. |
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Feb 8 |
comment |
When driving uphill why can't I reach a velocity that I would have been able to maintain if I started with it? @ja72 - I said in the question that if we do a simple analysis assuming the engine outputs some fixed power $P$ then we get that the car will reach $v_h$, and what you just did is exactly the analysis I was talking about. However, I think it's wrong to assume the engine outputs a fixed power, for example the power is limited by the RPM, please have a look at the answers below. |
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Feb 7 |
comment |
When driving uphill why can't I reach a velocity that I would have been able to maintain if I started with it? @ja72 - I'm not sure I would be able to reach $v_h$ eventually (in the answers below there are some possible reasons why I might not be able) |
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Feb 7 |
revised |
When driving uphill why can't I reach a velocity that I would have been able to maintain if I started with it? fixed a place where "gear" was mistankingly replaced with "RPM" |
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Feb 7 |
comment |
When driving uphill why can't I reach a velocity that I would have been able to maintain if I started with it? So far this seems like the best answer |
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Feb 7 |
suggested | suggested edit on When driving uphill why can't I reach a velocity that I would have been able to maintain if I started with it? |
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Feb 7 |
comment |
When driving uphill why can't I reach a velocity that I would have been able to maintain if I started with it? I agree, @Qmechanic added this tag. |
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Feb 6 |
comment |
When driving uphill why can't I reach a velocity that I would have been able to maintain if I started with it? I don't understand. Having fixed the gear the car is in, does the power depend on anything else except the RPM? If not then what's the meaning of saying there is a maximum attainable value of the power for a given RPM? |
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Feb 6 |
comment |
When driving uphill why can't I reach a velocity that I would have been able to maintain if I started with it? But the power required to maintained $v_h$ is higher than the one required for $v_l$, so if the engine outputs that power when it's going $v_l$ it already contains the additional power which is supposed to make it accelerate to $v_h$. |
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Feb 6 |
asked | When driving uphill why can't I reach a velocity that I would have been able to maintain if I started with it? |
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Feb 4 |
comment |
When and how did the idea of the tensor product originate in the history quantum mechanics? I didn't ask about intuition and experiments that lead to this, I asked whether it was intuition or experiments that historically led the originators of quantum mechanics. |
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Feb 4 |
comment |
When and how did the idea of the tensor product originate in the history quantum mechanics? Sorry but I think you completely missed the point of the question. This is not a question about quantum mechanics, but about the history of quantum mechanics. |
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Feb 4 |
accepted | When and how did the idea of the tensor product originate in the history quantum mechanics? |
