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Questions tagged [science]

Puzzles which require some knowledge of science to solve. Consider using the [physics], [chemistry] or [computer-science] tags if your question is specifically about these branches of science.

For puzzles using general scientific knowledge.

Consider using the , or tags if your question is specifically about these branches of science. Science questions which aren't puzzles are considered off-topic and should be asked on the Stack Exchange site for the relevant branch of science (e.g. Biology, Chemistry, Physics, Astronomy, etc.).

128 questions
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How high is the tide

A boat has a ladder that has six rungs. Each rung is one foot apart. The bottom rung is one foot from the water. The tide rises at 12 inches every 15 minutes. High tide peaks in one hour. When the tide is at its highest, how many rungs are under…
Gokul
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In the world of three electric charges

Imagine a world in which there are three kinds of electric charges instead of two. In this world, like charges repel and unlike charges attract. Let these types of charges be $A, B$ & $C$. Thus $A$ & $A$ repel, $A$ & $B$ attract, $A$ & $C$ attract…
manshu
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Trapped In A Well (Beginner)

You ironically fall into the well, with no way to get out. You, of course try digging out from under, but only to find that a Tungsten plate is below, all you have is a rope, a rock, and one liquid of any choice. What will you do? (The lid is sealed…
Ilikescience
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1 answer

A real life riddle

Suppose you are in a boat on a pond and you are holding a small 10 lb weight. You drop the weight into the water. Does the water level rise, stay the same, or lower?
Quintec
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2
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Initiation Puzzle

A sealed bottle containing flies is placed on a scale. When does the scale register the heaviest weight : when the flies are resting on the bottom of the bottle, or when all the flies are in flight?
Sam
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Cyrus' Adventure (Part 3)

With a request from @OmegaKrypton, who is my best friend (one of), I'm doing part 3 earlier. The wall suddenly opened by itself and Cyrus saw a dark room at the end. Cyrus walked carefully along the pathway and arrived at a dark room. Inside the…
昨晚忘記呼吸
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I forgot how to breathe...help

I have a problem. I can't breathe. I woke up one day and I forgot. How long do I live? This is my first question... I hope I don't make a mistake. Hint,but basically the answer am I alive?
John Meow
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