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Whats the difference in high frquency and loud sound ..? =\
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hhhhhhhhhh..... u should read the syllabus well while studying from the text book to knw the required info. and be sure u didn't miss any piece of info requiredi din knew a word "monochromatic" existed before solving w11 past paper
Didn't knw what's amplitude before i started solving pps xDi din knew a word "monochromatic" existed before solving w11 past paper
yeah m doing that , thanks alot =]hhhhhhhhhh..... u should read the syllabus well while studying from the text book to knw the required info. and be sure u didn't miss any piece of info required
hahaha lol srsly.. ig'z -.-i
Didn't knw what's amplitude before i started solving pps xD
When there is a cut, fibrinogen is converted to fibrin which forms a net like trap to trap all the red blood cells to prevent the blood from flowing, it dries to form a scab.can someone explain d process of blood clotting (SIMPLIFIED)
Err.. U took it? Really?SURE
that explanation is correctCan some one explain this part of the syllabus for me:
Explain why there is an increased efficiency in supplying green plants as human food and that there is a relative inefficiency, in terms of energy loss, in feeding crop plants to animals
In my notes the explanation is as follows"
If plants are fed to animals, and the animals are then eaten, it is less efficient than directly eating the plants, because the animal hasn’t used up some of the plants energy, allowing plants to feed more people.
In terms of conservation of energy, short food chains are more efficient than long ones in providing energy to the top consumer. Below are 2 food chains and energy values for each level in them. Both food chains have a human being as the top consumer.Can some one explain this part of the syllabus for me:
Explain why there is an increased efficiency in supplying green plants as human food and that there is a relative inefficiency, in terms of energy loss, in feeding crop plants to animals
In my notes the explanation is as follows"
If plants are fed to animals, and the animals are then eaten, it is less efficient than directly eating the plants, because the animal hasn’t used up some of the plants energy, allowing plants to feed more people.
i got i) 9cm and ii) 13.5cm. do you have the answers somewhere and if it is right i can tell you how i worked it outPls help me solve this question
I know its rather hard but just tell me what you think is right please...
A uniform metre rule of weight 0.9N is suspended horizontally by 2 vertical loops of thread A and B placed at 20cm and 30cm from its ends respectively. Find the distances from the centre of the rule at which a 2N weight must be suspended:
i) to make loop A become slack
ii) to make loop B become slack
hellppp =\
http://www.mediafire.com/view/?obdmzc6z6bssr3e question 9 (b)
Anytymthanks
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