Wednesday
May 4, 2016

# Posts by Freddo

Total # Posts: 20

Physics ...
Can anyone tell me what this symbol means μu What does it mean in therm of values such as AMUs like 170604μu Thanks
August 27, 2013

Physics ...
Thank you for your time ..
August 24, 2013

Physics ...
Hi Radioactive decay - A radioactive nuclide has a decay constant of - 10^-6 s-1 what is its half life ? I have come up with is IN (2) / 0.000001 s-1 = 693147.18055 which iam having troube working into real figures Can anyone help please .. thanks
August 24, 2013

Physics
Hi Radioactive decay - A radioactive nuclide has a decay constant of - 10^-6 s-1 what is its half life ? I have come up with is IN (2) / 0.000001 s-1 = 693147.18055 which iam having troube working into real figures Can anyone help please .. thanks
August 24, 2013

IT
Hi, IS it correct that DHCP is a protocol that enables network devices to share a pool of IP addresses. Is it also correct that DHCP operates at the APPLICATION Layer of the OSI model. Thanks
January 16, 2011

IT
On an optical disc is an extended pit interpreted as as a series of 0 `s I think it is am I right ? Thanks
January 14, 2011

IT Data transmission
Hi, Can someone check this for me please.. 18 MB of data are to be transmitted over a 4 megabits per second connection. How long should the complete transaction take, to the nearest 0.1s. Size of file / data rate so, 18MB x 10^6 x 8 bits = 144,000,00 4 megabits per second = 4 ...
January 13, 2011

IT computer memory
to the nearest 0.1 s
January 13, 2011

IT computer memory
Hi Sorry wasnt too clear This should read 18MB of data are to be transmitted over a 4 megabits per second connection ... how long would it take to complete the transaction
January 13, 2011

IT computer memory
Hi, Can someone check this for me please.. 18 MB of data are to be transmitted over a a megabyte per second connection. How long should the complete transaction take, to the nearest 0.1s. Size of file / data rate so, 18MB x 10^6 x 8 bits = 144,000,00 4 megabits per second = 4 ...
January 13, 2011

IT computer memory
Can someone check this for me please.. 18 MB of data are to be transmitted over a a megabyte per second connection. How long should the complete transaction take, to the nearest 0.1s. Size of file / data rate so, 18,874,368 bytes / 4,000,000 = 4.718592 = 4.7 is that correct a ...
January 12, 2011

Value of lava mass
This question has been posted before, and I amlooking for critque of my answer ..Thanks !!!! The specific heat capacity of the lava is 1600 J kg^-1 degres celsuis ^-1. when all the erupted lava cools from the eruption temperature of 1050 degrees Celsius to 15 degrees celsius, ...
May 5, 2007

Can anyone comment as to wether this solution is correct for this question please !! Draw a mating diagram where L is the dominant gene for the digestion of lactose and shows the crosses between two heterozygotes and wiht the the phenotypic and genotypic ratio of the offspring...
March 22, 2007

Genetics/biology
Can anyone comment as to wether this solution is correct for this question plaese !! Draw a mating diagram where L is the dominant gene for the digestion of lactose and shows the crosses between two heterozygotes and wiht the the phenotypic and genotypic ratio of the offspring...
March 22, 2007

DNA Lactase
Can anyone comment on my working out for the following question. position - - 1 2 3 4 5 6 7 8 9 - Nucleotide - - T A C T C G G A A - Write down the equivalent mRNA and hence work out the sequence of amino acid names coded in this part in the polypeptide produced you can assume...
March 11, 2007

Density of Gas at STP
Hi Can anyone explain how to calculate the density in g l -1 of a gaseous oxide at STP. I dont understand the term g l -1 !! Thank You "g l-1" should have the -1 as a superscript, meaning g l^-1, or g/l. It means they want the density in grams per liter. There are 22...
January 24, 2007

Isotopes
I have an isotope, 292 uuh 116 this suffers seven successive alpha decay reactions, I know each for alpha decay reaction the isotope loses 4 He 2 so the atomic weight decreases by four, and the atomic number by 2... None of the elements shown in the periodic table show an ...
January 23, 2007

Uuh Empirical formulae
Hi Can anyone help me define the empirical formula for highest fluoride and hydride in ununhexium. 292 uuh 116 How is this reached... Thanks freddo Uuh is in group 16 (or VIA depending upon the system being used) so its chemistry should be similar to O2, S8, Se, Po, etc. S ...
January 18, 2007

Chemistry
Hi Can anyone help me determine the valency of selenium in hydrogen selenide... how do you work this out ??? Thank you .. Freddo .. H2Se is the formula for hydrogen selenide. The valence of H is +1, there are two of them for a total charge of +2. For the compound to be zero, ...
January 10, 2007

Biomass increase !
Can anyone help please, Can anyone help me to calculate the increase in biomass in each of the three groups, Field mice Ingested 107Kj m-2 y-1 and lost 105 kj m-2 y-1 in respiration & faeces Grasshoppers ingested 444 kj and lost 374.3 kj and small birds ate seeds 60 kj and ...
December 30, 2006

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