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did u read this in any paper?what is the use of millibar ?
millibar is a unit for measuring pressure..it is a 100 pascals
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did u read this in any paper?what is the use of millibar ?
in 33:Need explanation for 32 and 33.
Since 33 has already been explained I will explain 32Need explanation for 32 and 33.
isnt inertia responsible for the coil to keep on moving....Since 33 has already been explained I will explain 32
A split ring commutator is responsible for moving the coil once it reaches the vertical position. So without it, the coil cannot pass by the vertical position and will stay there
yeh tht will happen.......If you think about it, the coil cannot go past the vertical position because both of its ends are fixed to the circuit. The split rings allow it to go past the vertical position, because they can 'disconnect' themselves from the circuit for a brief moment and make the 180 degree turn.
it was stated in syllabusdid u read this in any paper?
millibar is a unit for measuring pressure..it is a 100 pascals
tyby diffusion through stoma, by using the oxygen produced in photosynthesis, by the air in pores in the soil, and by directly through the outer air (as used by lower epidermal cells of leaf).
thats all, i guess.
k ...but thts all i know bout it.....i
it was stated in syllabus
thnxk ...but thts all i know bout it.....
any help here?Physics :
(h) discuss the environmental and cost implications of underground power transmission compared to
overhead lines.
cost:thnx
any help here?
No it isn'tisnt inertia responsible for the coil to keep on moving....
Elaborate?"Underground transmission lines in a radial system require more cables to meet the same reliability as an overhead line."
"The life expectancy of an underground line is about half that of an overhead line. so they need to be replaced more often..."
any help here?
In this part they're asking about the 'observable differences' that you have mentioned in the previous part. So you gotta link your answer to that. I guess. Not sure.http://papers.xtremepapers.com/CIE/Cambridge International O Level/Biology (5090)/5090_s12_ms_62.pdf
Q1 (c) (ii)
why cant we give reference to "more transpiration in in leaves in light because of more air spaces to cop with the more heat of sun" here?
have u seen any human ever making food by using suns energy directly....http://papers.xtremepapers.com/CIE/Cambridge International O Level/Biology (5090)/5090_w07_qp_1.pdf
Question 6 ? Why cant the answer be b? As CO2 is entering into the test tube b, which is acidic in nature so the ph would fall below 7, no?
no the plant is in a is respiring so tht is releasing co2 and thts y the colour of the tube would be yellow...and as for the other plant is is photosynthesizing and hence not releasing co2 or any alkaline substance so the tube would remain orange.....
Question 13? I dont get this AT ALL! :'(
the answer to this b......
Question 28? The sun being the ultimate source of energy would provide energy to both the consumer and the producer. Why can't the answer be as as every living organism takes energy from sun independently, apart from the energy flowing from the producer to the consumer.
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