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vascop

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David H

Man made CO2 measurement

The official figure is that man produces 3% of the CO2 in the atmosphere. Since the industrial revolution the total has increased by 30%. I can't handle maths so not sure how these two fit together,...
15:30 Mon 28th Jun 20109 answers, last by jake-the-peg 15:47 Wed 30th Jun 2010
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kopend

slugs

slugs - do they do any good in the garden?
20:07 Thu 17th Jun 20105 answers, last by rov1200 15:03 Mon 21st Jun 2010
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sprayer

recording from BBC iplayer

Friends of mine are on holiday soon and are Formula 1 racing fanatics. unfortunately they will be away for the next grand prix they have asked me if it is possible to download the race onto a memory...
12:53 Thu 17th Jun 201011 answers, last by birdie1971 23:14 Fri 18th Jun 2010
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dibble1

vacuum

I don't remember being taught this but apparently liquids boil in a vacuum. Does this generate heat? If so why can't we harness this heat?
23:40 Thu 10th Jun 201012 answers, last by EDDIE51 09:34 Sat 12th Jun 2010
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jimzee4

Maths question

Factorise a^2(b-c)+b^2(c-a)+c^2(a-b) ^2 means squared Any ideas?...
20:20 Thu 10th Jun 201010 answers, last by jimzee4 09:28 Tue 15th Jun 2010
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mollykins

fao factor30

thanks for all your help, the non calculator paper was hard, but not impossible, there was a question with a grid with stuff like x + y + z = 10 then x + 2y + 3z = 28 etc etc with a grid of 9...
15:17 Mon 07th Jun 201013 answers, last by vascop 18:52 Tue 08th Jun 2010
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Prudie

Internet speed

Sorry if this has been asked before but I don't understand the ads for broadband providers - eg BT and their up to 20 mbs speed - when surely it depends on your locality. I have 0.5 ish in my area but...
12:08 Sat 05th Jun 201010 answers, last by galeck1947 07:11 Wed 09th Jun 2010
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rov1200

Standing on the backs of Giants

There has been a series of programs on Channel 4 this week about past scientists who have changed our world. Is there any living scientists who could be added to the program so that in 100 years time...
20:01 Thu 03rd Jun 201014 answers, last by jno 08:35 Sat 05th Jun 2010
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Banu

physics

Three charges 0.1 coulomb each are placed on the corners of an equilateral triangle of side 1 meter. If the energy is supplied to the system at the rate of 1 kW, how much time would be required to...
10:35 Fri 04th Jun 20102 answers, last by igtretd 14:32 Tue 10th Aug 2010
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MADCARD7

Genetics

what is the difference in the structure of tRNA and mRNA?
02:46 Tue 25th May 20104 answers, last by society 15:31 Tue 25th May 2010
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rov1200

Why is nature much further ahead than human intelligence?

The breakthrough by Craig Venter this week in creating an artificial cell has been applauded by the scientific community. This was only a small step in creating a cell and only emphasises how little...
09:26 Sat 22nd May 201022 answers, last by emilygrace789 09:47 Fri 01st Feb 2019
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rov1200

Car collision

If a 1-ton car is travelling at a constant 60mph what force is exerted if it hit a stationary object? I always thought that Force=mass x acceleration but in this case 'a' = 0, therefore F = 0.
15:10 Sat 06th Mar 201010 answers, last by vascop 07:41 Mon 24th May 2010
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rov1200

Is there intelligence hidden within DNA?

DNA can produce proteins that give it form and shape but what gives it the ability to seek out a target when formed. Is there really a sixth sense?
13:50 Mon 19th Apr 201015 answers, last by vascop 18:37 Tue 20th Apr 2010
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flobadob

Technology review and specification site?

Is there a good go to site for all general technological products like cameras, camcorders, tvs etc. which would also hold archive reviews and specifications. I am currently trying to get a mini dv...
11:15 Sat 17th Apr 20102 answers, last by vascop 06:11 Sun 18th Apr 2010
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wizard66

types of milk

What is the difference between pasturised, sterilised and uht milk? Also what type of these milks is used in cheese making? thanks guys....
21:31 Sat 10th Apr 20107 answers, last by Avatar 15:00 Wed 14th Apr 2010
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danchc

Atoms: Why there are differnet numbers of Neutrons and Protons in stable elements.

According to the American Nuclear Society website: "a Nucleus that has more Neutrons than Protons is unstable, and such Nucleus will try to become stable by giving off particles or packets of...
01:56 Thu 08th Apr 20107 answers, last by danchc 20:12 Fri 09th Apr 2010
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AndiFlatland

Merging shadows

I've often noticed that when 2 shadows approach each other, just before they meet there seems to be a sort of 'reaching out' to each other. It's as if they are being gravitationally drawn to each...
16:54 Wed 07th Apr 20103 answers, last by john91 12:01 Fri 16th Apr 2010
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Fredinappolis

Infrared detectors and transistors

Does anyone know any good websites that talk about how an infrared detector and emitter from Radioshack works? I don't understand the theory behind it. I also am wondering about how transistors work....
00:00 Tue 06th Apr 20102 answers, last by mibn2cweus 11:13 Wed 07th Apr 2010
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mollykins

density units

while looking at a maths revisioni looked at reaaranging formulas, but there was something that confused me. I know the density is mass / volume, but i've always done it as g/cm cubed, or another...
09:56 Sun 04th Apr 201017 answers, last by factor30 10:39 Sun 11th Apr 2010
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bembo67

Laptop Wont Start Up...........:-(

Hi,my laptop will not start up when plugged in i have tried taking battery out holding down power button for 30-40 seconds,then plugging power lead back in,trying lead without battery etc,everything...
06:12 Mon 05th Apr 20104 answers, last by bembo67 06:45 Fri 09th Apr 2010

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