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## Openweather extention not working

From yesterday, openweather extention on the top panel does not show the weather. Its shows “Please wait Loading”. I tried to find the solution. There was a post of creating account on openweather website and use API id. I found that it is a subscription base plan. There was a free plan which allows 60 […]

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## Make Ubuntu’s Night Light look like Manjaro’s KDE’s Night Color

How can I make Ubuntu’s Night Light look like Manjaro KDE’s Night Color? I want this because Manjaro’s Night Color has a lot more features that allows me to customize the settings the way I want. Here is a screenshot of Ubuntu’s Night Light: Here are some screenshots of Manjaro KDE’s Night Color: As you […]

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## Range for which the Verhulst-Pearl model is a good approximate

The Verhulst-Pearl model describes the growth of a population using the differential equation, $$\frac{dN}{dt}=rN(\frac{K-N}{K})$$ where N is the population (no. of organisms), r, the intrinsic growth factor and K the carrying capacity of Nature for that species. Solving the differential equation, we can obtain a relation between time and instantaneous population, given as, $$\frac{N}{K-N}=\frac{N_o}{K-N_o}e^{\frac{rt}{K}}$$ Where […]

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I would like to make sure I understand intimidate well. If I have a green and blue creature, I can block a green creature with intimidate, because my creature shares a colour with it, right? And generally, creature is able to block creatute with intimidate if it shares at least one colour with it, colours […]

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## clang: error: linker command failed with exit code 1

duplicate symbol ‘_main’ in: /var/folders/60/kn6fgy517w72s7xc5dhpypjc0000gn/T/AuxiallaruSum-bad5e5.o /var/folders/60/kn6fgy517w72s7xc5dhpypjc0000gn/T/helloworld-c1807e.o duplicate symbol ‘_main’ in: /var/folders/60/kn6fgy517w72s7xc5dhpypjc0000gn/T/AuxiallaruSum-bad5e5.o /var/folders/60/kn6fgy517w72s7xc5dhpypjc0000gn/T/tempCodeRunnerFile-ab022a.o duplicate symbol ‘insertLevelOrder(int*, Node*, int, int)’ in: /var/folders/60/kn6fgy517w72s7xc5dhpypjc0000gn/T/helloworld-c1807e.o /var/folders/60/kn6fgy517w72s7xc5dhpypjc0000gn/T/tempCodeRunnerFile-ab022a.o duplicate symbol ‘newNode(int)’ in: /var/folders/60/kn6fgy517w72s7xc5dhpypjc0000gn/T/helloworld-c1807e.o /var/folders/60/kn6fgy517w72s7xc5dhpypjc0000gn/T/tempCodeRunnerFile-ab022a.o duplicate symbol ‘inOrder(Node*)’ in: /var/folders/60/kn6fgy517w72s7xc5dhpypjc0000gn/T/helloworld-c1807e.o /var/folders/60/kn6fgy517w72s7xc5dhpypjc0000gn/T/tempCodeRunnerFile-ab022a.o duplicate symbol ‘_main’ in: /var/folders/60/kn6fgy517w72s7xc5dhpypjc0000gn/T/AuxiallaruSum-bad5e5.o /var/folders/60/kn6fgy517w72s7xc5dhpypjc0000gn/T/template-132b16.o ld: 6 duplicate symbols for architecture x86_64 clang: error: linker command failed with exit code 1 […]

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## 555 timer question

R1=500k variable resistance R2= 10k when the timer’s operation time is 5sec, R1 86.7k What is the operation time when 4V is applied to 5(red point)? im student, so I would very appreciate it if you could explain it in detail

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## Can I replace a 32 A switch with a 32 A MCB?

A switch for a water heater in my apartment is broken (image attached). It is an “Anchor Roma 32 Amp 1-Way Switch with indicator”. Can I replace it with this or this switch? Would the installation be similar or the same? Background: I am a software engineer; I am not an electrical engineer but I […]

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## How to convert 220V AC to 12V 500mA DC safely?

I want to make a converter that converts 220V AC to 12V DC. I have a water pump that pumps water out from a small fish tank. Which is rated 12V 8W. Can you help me with a circuit diagram? It will be helpful if you include the detail of the required components.

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## Ni-Cd battery voltage indication of 100% charge

1.Hi,I have a Ni-Cd battery of 1.2 V and what is the voltage when it is 100% charged and for 0% ? Moreover what does that 1.2 V indicate.

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## Using a DS3231 RTC alarm + MOSFETS to turn on a MCU

I’m using a DS3231 in conjunction with two IRLZ44N MOSFETs to switch power to a MCU when the alarm on the DS3231 triggers. The alarm on the DS3231 pulls the SQW/INT pin to ground and turns on the MCU using the IRLZ44N FETs. When the MCU resets the alarm on the DS3231, the power is […]