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What should we know about potential divider ? And live earth and neutral wire ?
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x is the difference between the line and 80I get how you find the area of the yellow part, but what do you do after that? I don't understand the last part : area of yellow=1/2*(11.2*x)=1.6 80-x = 7.7
What is x? And why are we finding the area of yellow again when we just found it..? I'm confused, please explain if you can, or someone else, thanks .
What is a potential divider?Resistors in series, connected across a source of voltage, used to obtain a desired fraction of the total supplied voltage is called potential divider.What should we know about potential divider ? And live earth and neutral wire ?
Which
Q1. a) av.speed= (v+u)/2
=15m/s
b) a=(v-u)/t
a=(20-10)/60
a=(1/6)m/s2
distance=ut+1/2at2
=(10*60)+1/2*(1/6)*(60)2
=600+300
=900m
Q2. t=(v-u)/a
t=(1100-600)/10
t=500/10
t=50h
Q3. t=(v-u)/a
t=(0-20)/-5
t=-20/-5
t=4s.
Hhhhhhh xD I will not touch one inshallah , thnxxxxxxxxxxxx alottttttttttt luv u it is helpful thnxxxWhat is a potential divider?Resistors in series, connected across a source of voltage, used to obtain a desired fraction of the total supplied voltage is called potential divider.
how is it done?In case there are 2 resistors and both the resistors have the same value of resistance so provided potential will be divided equally to both of them. But if both resistors have different values then output voltage will depend upon the value of resistance of the resistor across which we are taking the output.
How does the reading increase, decrease? by moving the sliding contact this is the only things you should and yeah an example may be like a Rheostat
What color is Live? Brown
Where is it connected? directly to the generates of the electrical supply
Why will this wire kill you ? It carries a lot of Voltage
What color is neutral wire? Blue
Connects?The Neutral wire returns the electricity to the generator after it has passed through the appliance, to complete the circuit.
Why will it kill you? The Neutral wire is at approximately zero volts but you must NEVER touch this wire either!! If the wiring is faulty it may be carrying the same electricity as the Live wire.<--- in case you end up touching one i will miss you my friend
I hope i helped
Half speed 12/2=6
phy
http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_s09_qp_3.pdf
5 ( B )
http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_s12_qp_31.pdf
11 b and c
why the LDR in gap B and why thermistor in gap A
http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_w10_qp_33.pdf
Q10 a
please help me
I don't understand , sorry, thanks for help thoughx is the difference between the line and 80
x is the height of the yellow triangle
We are not finding the area yellow=1/2*(11.2*x)=1.6 here i am using the formula to find the are of the triangle as we don't know the height the formula is (1/2)* length*height=area we know the length which is (11.2) from the x axis we now the are we found it using another method you have understood so to find x make x the subject i did not mention x because it is in decimals and you should NOT round it so the equation actually is x=area/(o.5*length)
now x is only the difference between the line but we want the length of the line UNDER x we subtract x from 80 and we get the answer
there might be other ways but i found this easy i hope i could have made my self clear
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