# All Questions

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### Incompressible quantum liquid

In condensed matter physics, what does the term incompressible in incompressible quantum liquid mean?
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### Centrifugal Compressor Flow Rate

For a centrifugal compressor, as found in most turbochargers on internal combustion engines, is there a noticeable change in flow rate versus a naturally aspirated flow rate? In other words, does the ...
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### How Safe Are Heat Ray Guns?

Could a little meddling with the frequencies of the Heat Ray Gun beam result in frying crowds rather than dispersing them?
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### How To Stop A Heat Ray Gun?

What material would be best suited to create a shield to protect from the new heat ray gun?
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### Unknown isotope

Problem description: The most common isotope of a single nucleus stripped of its electrons is accelerated through a potential difference of 1225V and fired horizontally into a B-field directed ...