Member Since November 11, 2007
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Answered: Why is the angular dimension of the moon so ...

It looks more like a coincidence to me. A theory about it would start like this: if A orbits B and B orbits C, would A and C appear to be of similar size when viewed from B?. I can not see a ...

Answered: Why hydrgen and oxgen make water instead of gas?

Good question: at room temperature hydrogen and oxygen are gas, yet water is liquid. The two hydrogen atoms are rather tiny and light compared to one atom of oxygen, so it is indeed surprising that ...

Answered: Physical science

Nuclear radiation damages the molecular structure of the DNA, causing tissue to grow into tumors and cancers, rather than just replacing dead cells as usual. Critical mass is needed so that a ...

Answered: Water pressure on an object

It depends a lot on the shape of the object: a cone will move easier than a flat surface. if the flow is laminar - meaning there are no vortexex around the object as it moves - the resistance ...

Answered: How does a leg hair monitor its own length?

Interesting question; the same might be asked for eyebrow hairs, for instance. I am not sure about leg hairs, but eyebrow hairs begin to grow to abnormal length once we age, supposedly due to our DNA ...

Answered: Define independant and dependant variable.

There is no such thing as a a variable that is dependent or independent on its own. In the context of causality, a variable is dependent if its values are directly affected by another variable ...

Answered: Shaking hands

If the other person is standing I would stand up - or at least start to rise - while shaking their hand. It looks to me like otherwise you are not treating them as your equal, informal situation or ...

Answered: Number theory

<2> if we take for granted that every number can be decomposed as product of primes in an unique way - except the order: m divides (a-b) hence a-b = m*q n divides (a-b) hence all the prime factors ...

Answered: Stirling Engines instead of solar panels

I have been following this topic myself for a while. All reviews that I read claim that they do about twice as good compared to pannels - in terms of cost per kwh. Also it seems the technology is ...

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