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Rev. Green

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Rev. Green
The high-power pumps can empty the reservoir in four months and consume large amounts of energy. A hundred pipes could empty it quicker and cost little.
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Rev. Green
Is anyone else irritated by not knowing in The Planets series which scenes are real and which are computer-generated. It would be easy to include an on-screen symbol to tell us which. Wildlife and...
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vetuste_ennemi
Just watched episode 1 (of five) covering the formation of the terrestrial planets. Nice stuff. If you hadn't clocked the series it's on BBC2 and available on IPlayer....
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Rev. Green
Ducks fly in V-formation to save energy. When swimming, should the V be sharper or flatter? Does it depend on viscosity, or speed of sound in the medium, or both?
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Peter Pedant
ABCD is a trapesium with AB parallel to DC - the diagnonals meet at X - prove DXC and BXA are similar traingles and that area of DXC = DC2 ---------------- ------ araa of AXB AB2 Answer - the similar...
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Rev. Green
Please tell me the third column to show where I keep going wrong.
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Rev. Green
How do Black Holes swallow matter? They have high gravity, but almost every object that approaches them should go into orbit in the same way that almost everything in the Solar System orbits the Sun....
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Rev. Green
If I receive income on Tuesday and give some to my son on Thursday, he never has to pay tax on it even if I die within seven years. If I wait twenty years to give it, it then becomes savings, and he...
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Bert45
I'd like to know what £1000 20 years ago would be equivalent to today. I've been online, of course, but the calculators don't give me what I want to know. To be clear, what I want to know is the...
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lainiej
My family has inherited a quite large sum of money from my late Mum. I'm thinking of putting it in a decent interest bank account until we are in a position to share it out. Any suggestions please?...
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Rev. Green
What is the spacing of isobars on BBC Weather? Is it always the same? It seems about four millibars.
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bazzard
Mentioned to someone that the public swimming pool was cool. Was told by staff that it was cooler because lots of school children had just had a session in it. Is this scientifically correct?...
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18mbuck
I put 2 beakers on a balance one contained 20cm cubed of hydrochloric acid 20cm cubed of sodium hydroxide solution. The total mass was 163.5 she poured the acid onto the sodium hydroxide .Why did the...
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Khandro
If the universe is expanding, which seems to be the case, what is it expanding in to?...
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Pattimac
Short-wavelength electromagnetic radiation resulting from high-speed electrons striking a solid target
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samj
air moving eastward more slowly than the earth rotates would appear to an observer to be what kind of wind?
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scotthoather
what is the name of the type of energy stored in a cell?
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kevin king
what is static electricity
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schonovic
is there anyone out there savvy enough in physics to ponder my idea, it is of an object i call an inverse element, the opposite of a space heater;the inverse element would be a band of material that...

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