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IP-Info

IP-Info is a website where you can find out what your IP is as well as your user agent and information about your browser and OS. The site also has tools for looking up information about a particular IP and reverse DNS lookups. There is also a tool where you can check "is this site down" and numerous informative articles.

Die Seite gibt es auch auf Deutsch: Wie ist meine IP

Valhalla Core Utils Library

Check out the Valhalla Core Utils Library now! Our PHP library has many easy-to-use classes for tasks such as handling Memcached and MySQL connections, making cURL requests, and much more!

Check it out the documentation on the Valhalla Core Utils Website.

View the code in our Git repository here.

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ElectricalEngineering3


EE2-4

Keeping the frequency f and the resistance R as in the previous challenge (EE2), which value for L would result in a cut of output voltage by -20 dB relative to Vin?
Please give the answer to the nearest integer in mH.


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Challenge by j4m32.