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1 vote
2 answers
1k views

Formulation of acceleration in general

I know that in fluid dynamics, we use Lagrangian description of acceleration. That is, a material derivative $$\frac{dv}{dt}=\frac{\partial v}{\partial t}+(v\cdot\nabla )v .$$ My question is can we ...
Rishabh Jain's user avatar
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22 votes
1 answer
5k views

Bernoulli's equation and reference frames

So I was thinking about this while driving home the other day. I've never been quite clear on why when you drive with the windows down air rushes into your car. I thought this might be explained by ...
PatEugene's user avatar
  • 381