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Physics, Chemistry and Biology: Post your doubts here!
- Thread starter semsemhosam
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Then why's the UI solution at the anode turning red (then colorless)?
I saw this question on another thread as well. I think the question's wording is wrong. They might have meant that the anode turned blue (due to OH- ions), and then colourless, and the opposite of the cathode as well.Then why's the UI solution at the anode turning red (then colorless)?
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hey !!
quick question :-
a)Calculate and predict the results of mono hybrid crosses involving 1:1 and 3:1 ratios.
b)Explain co dominance by reference to the inheritance of ABO blood groups-phenotype. A, B, AB and O blood groups and genotypes I^A , I^B and I^O .
quick question :-
a)Calculate and predict the results of mono hybrid crosses involving 1:1 and 3:1 ratios.
b)Explain co dominance by reference to the inheritance of ABO blood groups-phenotype. A, B, AB and O blood groups and genotypes I^A , I^B and I^O .
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http://gopapers.net/igcse.html?_0625_w11_qp_31
q-3 b ii ,q-7 b ii, q-11 b ii
My Name
3)b)i) clockwise moment = anticlockwise moment
f1*d1 = f2*d2 + f3* d3
7)b)ii)
11)
q-3 b ii ,q-7 b ii, q-11 b ii
My Name
3)b)i) clockwise moment = anticlockwise moment
f1*d1 = f2*d2 + f3* d3
7)b)ii)
11)
http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Chemistry (0620)/0620_s10_ms_31.pdf
q-4 d y not catalyst ?
http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_w10_ms_31.pdf
q-3 a ii
q-8 c is this ok ?
when switch is connected to position C charge is being stored ans ammeter reading becomes zero.
q-9 part b ii WAt I s happening?
q-10 b detector at C
cud be beta becuz if I place my hand like Flemings hand
north to south in to paper
then from from positive to negative so beta
q-11
1st straight horizontal line
Second like full wave and third like this
http://www.schoolphysics.co.uk/age1...cs/text/Cathode_ray_oscilloscope/images/6.gif?
http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_w09_qp_31.pdf
q-3 part f is this alright >this is beacuz after a certain limit the spring loses its elasticity limit
question 8 my object was not somewhere between F2 and lens
so I loose all marks ? L
q-10 I did this 22,000 – 7.5
but in ms they do it twice becuz two wires ?
http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_s09_qp_3.pdf
q-5 bii ( very weak in maths L)
q-6 part b ii how cum it is = (i)
q-7 hehe….wat does this mean
Total penalty for use of ‘particles’ rather than ‘molecules’ is 1 mark.?
q-9 a wat Is bettr
http://upload.wikimedia.org/wikipedia/commons/5/51/Waveform_halfwave_rectifier.png
OR
http://www.jimdirectory.com/1/53_2.jpg
q-9 plz explain if possible!
q-11 part b how come its 2 marks
if I write from top to the bottom of page so its 1 mark gained?
PLZ AND THANKU
Phoenix Blood
q-4 d y not catalyst ?
http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_w10_ms_31.pdf
q-3 a ii
q-8 c is this ok ?
when switch is connected to position C charge is being stored ans ammeter reading becomes zero.
q-9 part b ii WAt I s happening?
q-10 b detector at C
cud be beta becuz if I place my hand like Flemings hand
north to south in to paper
then from from positive to negative so beta
q-11
1st straight horizontal line
Second like full wave and third like this
http://www.schoolphysics.co.uk/age1...cs/text/Cathode_ray_oscilloscope/images/6.gif?
http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_w09_qp_31.pdf
q-3 part f is this alright >this is beacuz after a certain limit the spring loses its elasticity limit
question 8 my object was not somewhere between F2 and lens
so I loose all marks ? L
q-10 I did this 22,000 – 7.5
but in ms they do it twice becuz two wires ?
http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_s09_qp_3.pdf
q-5 bii ( very weak in maths L)
q-6 part b ii how cum it is = (i)
q-7 hehe….wat does this mean
Total penalty for use of ‘particles’ rather than ‘molecules’ is 1 mark.?
q-9 a wat Is bettr
http://upload.wikimedia.org/wikipedia/commons/5/51/Waveform_halfwave_rectifier.png
OR
http://www.jimdirectory.com/1/53_2.jpg
q-9 plz explain if possible!
q-11 part b how come its 2 marks
if I write from top to the bottom of page so its 1 mark gained?
PLZ AND THANKU
Phoenix Blood
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There's no 4)d)
oops i meant 3 d
Last edited:
- Messages
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http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_w10_qp_31.pdf
3)a)ii)
Area of all 4 pistons combined = 0.02*4 = 0.08 m^2
Sinces force = pressure*area, total upward force =
100 000 * 0.08
8000 N
8)c) No, the other way. The ammeter reading falls as capacitor charges.
9)b)ii) There's a surplus of +ve charges at Y, so electrons from the earth will flow towards it, and balance the charge (i.e. region Y will now have equal number of positive and negative charges)
10) This is always the case in a magnetic field:
11)
3)a)ii)
Area of all 4 pistons combined = 0.02*4 = 0.08 m^2
Sinces force = pressure*area, total upward force =
100 000 * 0.08
8000 N
8)c) No, the other way. The ammeter reading falls as capacitor charges.
9)b)ii) There's a surplus of +ve charges at Y, so electrons from the earth will flow towards it, and balance the charge (i.e. region Y will now have equal number of positive and negative charges)
10) This is always the case in a magnetic field:
11)
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Idk, maybe because the measurings would be disturbed, or that we don't know of any catalyst to insertoops i meant 3 d
Temperature and surface area are most of the times the factors altering rates of reactions.
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http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_w09_qp_31.pdf
q-3 part f is this alright >this is beacuz after a certain limit the spring loses its elasticity limit
question 8 my object was not somewhere between F2 and lens
so I loose all marks ? L
q-10 I did this 22,000 – 7.5
but in ms they do it twice becuz two wires ?
-----------------------------------------------------------------------------------------------------------------------------------------------
3)f) exceeds, not looses.
8) Just draw something like this, with proper measurement to the left of the lens
10) Yes.
q-3 part f is this alright >this is beacuz after a certain limit the spring loses its elasticity limit
question 8 my object was not somewhere between F2 and lens
so I loose all marks ? L
q-10 I did this 22,000 – 7.5
but in ms they do it twice becuz two wires ?
-----------------------------------------------------------------------------------------------------------------------------------------------
3)f) exceeds, not looses.
8) Just draw something like this, with proper measurement to the left of the lens
10) Yes.
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Did i even answer all, what-were-you?-monkey ?
- Messages
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http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_s09_qp_3.pdf
q-5 bii ( very weak in maths L)
q-6 part b ii how cum it is = (i)
q-7 hehe….wat does this mean
Total penalty for use of ‘particles’ rather than ‘molecules’ is 1 mark.?
q-9 a wat Is bettr
--------------------------------------------------------------------------------------------------------------------
5)b)ii) Because the speed if halved, the mass of air is too.
7500/2 = 3750 kgs.
(1/2*m*v^2 = k.e.)- relating speed, force and mass.
6)b)ii) Area doesn't affect pressure. Only height, density, and gravity does. ( Pressure = h*d*g)
7) No, its not for 1 mark, but if you're using it, you're not gaining any marks
9)a) What's better what?
q-5 bii ( very weak in maths L)
q-6 part b ii how cum it is = (i)
q-7 hehe….wat does this mean
Total penalty for use of ‘particles’ rather than ‘molecules’ is 1 mark.?
q-9 a wat Is bettr
--------------------------------------------------------------------------------------------------------------------
5)b)ii) Because the speed if halved, the mass of air is too.
7500/2 = 3750 kgs.
(1/2*m*v^2 = k.e.)- relating speed, force and mass.
6)b)ii) Area doesn't affect pressure. Only height, density, and gravity does. ( Pressure = h*d*g)
7) No, its not for 1 mark, but if you're using it, you're not gaining any marks
9)a) What's better what?
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http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_s09_qp_3.pdf
q-9 plz explain if possible!
q-11 part b how come its 2 marks
if I write from top to the bottom of page so its 1 mark gained?
---------------------------------------------------------------------------------------------------------
9) And if not possible?
Trace out the path in which the direction of current isn't blocked by the diode, and goes from red to black.
11) Take it man
one maybe for making reference to the page, and the other for the direction. Or else, they take it as a tough question, so give 2 generous marks Why, one has to apply fleming's here too.
q-9 plz explain if possible!
q-11 part b how come its 2 marks
if I write from top to the bottom of page so its 1 mark gained?
---------------------------------------------------------------------------------------------------------
9) And if not possible?
Trace out the path in which the direction of current isn't blocked by the diode, and goes from red to black.
11) Take it man
one maybe for making reference to the page, and the other for the direction. Or else, they take it as a tough question, so give 2 generous marks
Why, one has to apply fleming's here too.http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_s09_qp_3.pdf
q-5 bii ( very weak in maths L)????
11) Take it man
one maybe for making reference to the page, and the other for the direction. Or else, they take it as a tough question, so give 2 generous marks Why, one has to apply fleming's here too.
did not follow
q-5 bii ( very weak in maths L)????
11) Take it man
one maybe for making reference to the page, and the other for the direction. Or else, they take it as a tough question, so give 2 generous marks
Why, one has to apply fleming's here too.did not follow
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What math? You've now less speed. Infact, now you own half the speed, so you'll be pushing half the amount of air.
If i pump my fists in the air with 50 N, i'll push aside maybe 200 kgs worth of air.
But if i do the same thing with less force, say about 25 N, i'll only be pushing 100 kgs.
Call speed force here?
If i pump my fists in the air with 50 N, i'll push aside maybe 200 kgs worth of air.
But if i do the same thing with less force, say about 25 N, i'll only be pushing 100 kgs.
Call speed force here?
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11) Its hard enough a question, that is why.
Mark 1- idea of in plane of page
Mark 2- down the page
Mark 1- idea of in plane of page
Mark 2- down the page
Thought blocker
XPRS Moderator
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I know that feel Munzi Shunzi