4 votes

Efficiency of molecular motors vs. human-made motors

I think that statement is misleading because it is too vague. Yes diesel and gas engines are inefficient, however electric motors typically average between 80-95, depending on the range of rotation ...
bandybabboon's user avatar
  • 10.4k
3 votes

Can a mathematical function be assigned to ECG diagram?

Yes a function could be assigned to an ECG diagram. I don't know if that would be helpful in any kind of research. Anyway I believe that from a mathematical point of view that if you manage to include ...
serax's user avatar
  • 131
3 votes

Efficiency of molecular motors vs. human-made motors

It is referencing an out of date study poorly. The efficiency of F1-ATPase has been measured at so close to a hundred percent that the margin of error of the measurement, exceeds the difference. BUT ...
John's user avatar
  • 14.7k
2 votes

How badly will warmer air affect birds' ability to migrate long distances?

I suppose it is (sometimes) exactly the same for birds as for planes. [same] Newton's second law tells us that Force = mass times acceleration, and Newton's 3rd law tells us that for every force there ...
A Friendly Fish's user avatar
2 votes
Accepted

Does thermal shock apply to human bones?

No is the answer to this - stop a think for a little bit. If this were the case, there would be many thousands of such incidents observed every year, and no-one would ever do such things as plunge ...
bob1's user avatar
  • 11.8k
2 votes

Do hair cells in the ear also vibrate at frequencies outside our hearing spectrum?

Hyperphysics has a good overview of human hearing from a physics perspective you may want to check out. It should clear up some misunderstanding you have. First, the idea that hair cells in the ...
E Tam's user avatar
  • 842
2 votes
Accepted

Action Potential and Impulse Direction

This is due to the refractory period at the end of each impulse. From here The cell membrane cannot immediately produce a second AP. The period of time when the majority of voltage-gated Na+ channels ...
theforestecologist's user avatar
1 vote
Accepted

Why don't membrane potentials violate the principle of electroneutrality?

There is perhaps Pauling's principle of electroneutrality "each atom in a stable substance has a charge close to zero" - maybe that's the principle referred to in your book? "Close to&...
Bryan Krause's user avatar
  • 45.6k
1 vote

Can Sleeping With Reptiles Reduce Excess Body Heat from Your Partner?

Reptiles are generally ectothermic or "cold-blooded", not to be confused with exothermic. This means they largely use environmental heat sources to get their heat, rather than generating it ...
bob1's user avatar
  • 11.8k
1 vote

How does Bernoulli’s Principle apply to the cardiovascular system?

I love this question, and there is a number of things to unpack. Exactly where we are measuring a pressure in that circut matters. We usually measure a persons BP in the brachial artery, so relatvely ...
Ryan 's user avatar
  • 11

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