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Applies to questions of primarily educational value - not only questions that arise from actual homework assignments, but any question where it is preferable to guide the asker to the answer rather than giving it away outright. Please READ THE GUIDANCE IN META before asking homework-like questions.

-1 votes
1 answer
51 views

Sharpest camera shoot within a mirror [closed]

In order to take the sharpest camera shoot from the reflected object image in the mirror, the camera should be placed $x\,m$ farther from the reflected image object. How can I determine $x$ ?
Mohammad Fakhrey's user avatar
1 vote
2 answers
282 views

Possibility of determining the mass of the water without a scale?

Possibility of determining the mass of the water by knowing water volume, water temperature and atmospheric pressure. I want to know if I can determine the mass of $V=0.01\,m^3$ of water in $T=298\,k …
Mohammad Fakhrey's user avatar