Physics Paper 1 question!

[oahmed64]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_w06_qp_1.pdf
Q27 howcome its B isnt the equation for voltage+current x resisitance so u need an ammeter to measure the current ?

 

[Sapphire_26]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_w06_qp_1.pdf
Q27 howcome its B isnt the equation for voltage+current x resisitance so u need an ammeter to measure the current ?

wait.. what?? they are asking to calculate "electromotive force (e.m.f.) of a battery and the potential
difference (p.d.) across a resistor" so why would u need an ammeter?? shldn't it be voltmeter?

 

[Sapphire_26]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_s08_qp_1.pdf
ok i m probably dumb to not get this..
so how do u solve question 5 in this paper??

 

[mohamed magdi]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_w06_qp_1.pdf
Q27 howcome its B isnt the equation for voltage+current x resisitance so u need an ammeter to measure the current ?

the answer is A , and ur equation is wrong . Its voltage = current x resistance , maybe u mistyped it..
u dont even need an equation for this question

 

[Othman]

guys im getting really confused now about forces
if two forces act in the same direction can they be in equilibrium ?
also there was a question about a wood stick that is pivoted and free to move and three forces of the same value are acting on it in different directions and the question was in which direction does the wood move ? how do we know the answer ?

In that question one force was exerted on the end of the wood stick so in the direction of that force.
As Moment = force * distance

 

[Othman]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_s08_qp_1.pdf
ok i m probably dumb to not get this..
so how do u solve question 5 in this paper??

B, they're in balance so they have the same weight and mass

 

[Vibhs08]

you have no idea how dumb i feel after this... I am oblivious to the most obvious thing!!

it's alrite! such things happen during exams! Just relax and prepare well for the exam. You'll do great.

 

[oahmed64]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_w04_qp_1.pdf
Q11 , isnt pressure=force/area so he larger the area the smaller the pressure,so the thumb has less pressure but the answer in the ms is D
how come?

 

[Othman]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_w04_qp_1.pdf
Q11 , isnt pressure=force/area so he larger the area the smaller the pressure,so the thumb has less pressure but the answer in the ms is D
how come?

Yes the area of the pin acting on the thumb is smaller than the pinhead so it is D...

 

[trao11]

Everyone doing variant 2, good luck for tomorrow! Btw, any words of wisdom you guys have to offer me?

 

[mak kings]

plz canany1 help in this http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_w12_qp_11.pdf Q10 ,, Y not b ..and Y is the answer C

 

[cookiemaker]

plz canany1 help in this http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_w12_qp_11.pdf Q10 ,, Y not b ..and Y is the answer C

Its not B because obviously he would do more work if he lifts 5 boxes than 2 boxes. It is C because time doesnt affect the work done. It may take a person 10 seconds and another person 1 min but the work done would be the same because work done = force x distance. The force and the distance matter to calculate the work done. More boxes means more force, while time doesnt affect force or distance.

 

[Ali hussain-97]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_w12_qp_11.pdf why is the answer B and not A???? please provide evidence.

 

[Ali hussain-97]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_w12_qp_11.pdf why is the answer B and not A???? please provide evidence.

for question 20

 

[cookiemaker]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_w12_qp_11.pdf why is the answer B and not A???? please provide evidence.

Its not A because convection only happens in liquids and gasses, not in solids so A, C and D are automatically not the right answers.

 

[Ali hussain-97]

Its not A because convection only happens in liquids and gasses, not in solids so A, C and D are automatically not the right answers.

Thank you!

 

[mak kings]

Its not B because obviously he would do more work if he lifts 5 boxes than 2 boxes. It is C because time doesnt affect the work done. It may take a person 10 seconds and another person 1 min but the work done would be the same because work done = force x distance. The force and the distance matter to calculate the work done. More boxes means more force, while time doesnt affect force or distance.

OH THANX ALOT!! D

 

[Ali hussain-97]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_w12_qp_11.pdf Q33 I don't understand how the variable resistor works somebody please explain it to me

 

[oahmed64]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_s04_qp_1.pdf
q8, how do we know the answer ?

 

[omaaaar]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_s12_qp_11.pdf
Q8 how is the answer C,the upward and downward forces are equal so the handle shouldnot move
Q10 why gravitational energy ,at point Y gravitational energy will be zero
Q18 in convectiondoes the liquid expand or the molecules in the liquid will expand
Q23 could you tell about the characteristics of the image formed by a plane mirror
Q33 could you explain no idea​