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This question is very odd... to explain, it is for a post-apocalyptic novel where the surface has become uninhabitable and the population lives under water. Quite a simple question none-the-less......
I've read that the newly refurbished St Pancras Station has a new roof fitted with 18,000 panes of self-cleaning glass. Does anyone understand this and how it self-cleans? Would it be practicable in...
If a brass rod 1M long is struck it produces a note of a certain frequency. If the rod was 50cm long then 25cm long would the frequency be half that of before or is the change logarithmic?
I've heard that carbon monoxide can pass through walls and floors in a home. Can it go through plastic? What other substances will contain it or allow it to pass through?
what new info on this has been announced by NASA? I have just heard that they are making an anouncement at 10.30 and now my son wants to know what it is all about.
a right-angles triangle has an area of 20cm2. Two of the sides ar equal in lengh. what are the lengths of the equal sides? I worked it out as 6.3245cm but it seems a odd number.
hi guys I have problems with logical thinking. For example: Statement A: The boys had picked on Malcolm in the woods. Statement B: The boys had NOT picked on Malcolm in the woods Statement C: The boys...
The information given for an electric kettle includes the following numbers and letters: 200 ? 230 V, 1500 ? 2300 W, 50 Hz. Explain what these numbers mean
what is 0 divided by 0 on one hand it could be 1 because anything divided by itself is 1 or it could be infinity because anything divided by 0 is infinity... which one is it?
What are all the known ones? And do you think there will ever be a conclusive amount of them? I'm writing an essay on questions which science can/never/can't yet answer, and the dimension one is in...
I know this is only simple maths but, being 71 years of age, I've forgotten some things. My question is: In a maths problem where a =2, b= -1 and c= -1, what is the value of 3abc ( I don't know what...
someone put a link on to a site which showed amazing pictures of the universe, stars, space etc etc, it had the word ZOO in it, ring a bell with anyone? Ive searched and searched but can't find it.
I once read an article, i think it was in the readers digest,that people who have a colour deficiency, don't usually make good dancers, or are able to sing in tune, and will not play a musicle...
are these correct? Zn + CuO = ZnO + Cu 2Fe + 3CuO = Fe2O3 + 3Cu Mg + CuO = MgO + Cu Fe + ZnO = ZnO + Fe Cu + Fe2O3 = Fe2O3 = Al2O3 Al + Fe2O3 = Al2O3 Thanks x