Physics, Chemistry and Biology: Post your doubts here!

[princess sofia]

cn any1 plz answer it dat how would we b makng da circuit diagram for Q2
thnx in advance

 

[vevoxDho]

cn any1 plz answer it dat how would we b makng da circuit diagram for Q2
thnx in advance

• Volmeter is connected only accross AB
• CD is not connected only from one side so current won't flow through CD and would flow only through AB.
• In Fig. 2.2, CD will be connected in parallel, so if you looked at Table. 2.1, you will find that current in circuit 2 increased as total resistance decreased.
• In Fig. 2.3, CD will be connected in series, so if you looked at Table. 2.1, you will find that current in circuit 3 decreased as total resistance increased. Also, the voltage is halved as these two resistance wires are identical.
• Resistor AB has to drawn as a normal resistor not as a variable resistor, even though it has a slider, as it was mentioned in the question"The circuit includes two identical resistance wires AB and CD. Use the standard symbol for a resistance to represent each of these wires."
• We know which one is voltmeter and which one is ammeter from the fact that "ammeter is connected in series and volmeter is connected in parallel".

Hope it helped


Picture made using Paint.

 

[vevoxDho]

0.5 Io = 0.5*(3.0)
=0.15

The resistance value from the table shows that a 10.1 value for R makes 0.15 A of current flow in the circuit
Let the resistance of X be x
Total resistance in circuit = 10.1 + x = 2x

solve for x
10.1 + x = 2x
x = 10

Thanks for explaining it. I just didn't see the Io in the 0.5Io.

 

[Phoenix Blood]

Can anyone just mark it with the arrow and show me where we draw the arrow?

 

[Allah's Slave]

yeah ,in buraidah we r gvn 13 april

i haven't got the dates yet!!

 

[vevoxDho]

Is Casio fx-85ES PLUS and Casio fx-85ES allowed in CIE exams?
Please, answer.

 

[princess sofia]

Ha

i haven't got the dates yet!!

ve u got da statement if entry

 

[vevoxDho]

Can anyone just mark it with the arrow and show me where we draw the arrow?

Here it is.

 

[Phoenix Blood]

Here it is.

View attachment 37773

Why is that the root hair? Any other structures in this diagram? Please show

 

[Lola_sweet]

i haven't got the dates yet!!

Go to ur local british council and ask them! If ur a private candidate if not then ur school shld let u knw.

 

[Kimo Alazab]

somebody explain me hooke's law
#IGCSE physics??????

 

[princess sofia]

hey cn any1 explain me the wave theory especially the wavelet part , i never get it ...

 

[princess sofia]

somebody explain me hooke's law
#IGCSE physics??????

hookes law states dat extention of the spring is directly propotional to the loads dat cause dat specific extention untill limit of propotinality remains
the limit of propotionality is the point beyond which whn loads removed the spring loses its elasticity and so donot return to its orignal shape and size
hence the equation formed is F=kX
where F is the load hung , k is the constant and X is the extention
hope dat helps

 

[vevoxDho]

Why is that the root hair? Any other structures in this diagram? Please show

Cells on the farest outer part with hair are root hair cells.
Cells on the outer part with no hairs are epidermal cells.
Cells in the are cells of the vascular bundle.
Cells between the outer part and vascular bundle are cortex cells.

 

[vevoxDho]

Epidermis has the root hair cells.

 

[Phoenix Blood]

Epidermis has the root hair cells.

THANKS!

 

[shoaib672002]

Please Help , how to do this

 

[shoaib672002]

How to do this

 

[princess sofia]

Please Help , how to do thisView attachment 37858

its of 2 marks so 2 points only to write
1. the sex of the fetus is determined by the 24th chromosome in the male gamete
2. if the gamete which fuses with femae gamete contain X chromosome so the fetus is female and if it contains Y so its male
( thx is cze female has XX chromosome and male have XY chromosome)

 

[princess sofia]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_s10_qp_31.pdf
Q11 (b)
plz answer it dat how r we gonna do so