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Physics Help HERE ONLY !!
IGCSE hater!:
can anybody tell me wehre to find the QUESTION papers for physics papaer 1?
7ooD:
freeexampapers.com for all from 2002 until 2008 if you want from 93 to 2001 then go to https://studentforums.biz/index.php/topic,2342.60.html and https://studentforums.biz/index.php/topic,2342.45.html +rep for hmh
angell:
I have a couple of doubts, I just started....this is from 2000:
Q.6,7,11,19,32,33 - June 2000
and
Q.3,4,9,24,37 - Nov 2000
please help! i know the correct answer, i just wanna know WHY :S
7ooD:
ok for
Q 3 constant speed means same speed so a straight line that is parallel to the x axis which should be C
Q 4 acceleration can be found by the equation of V-U so here the V which is the final velocity is 150 and U the initial velocity is 50 so acceleration is 100
question 6 bathroom scales and force meter and top-pan balance all depend on the force of gravity but for beam balance the unknown mass in one pan is balanced against known masses in the other pan
Q7 easy the beaker mass is 100 g and the beaker+water is 140 g so the mass of the water is 140-100 and apply the equation mass=density*volume to get the density
Q 9 take this rule in mind whenever the effort or force or weight is away from the pivot it means it is less than the other force on the other pivot therefore less effort in the longest and furtherst from the pivot which is at D
Q 11 they use the concept of pressure in liquids to convert it into electrical energy so they choose D because the more the depth of liquid the more the pressure that water flows faster and thus the turbine rotates faster giving more output so at D it is at more depths than A and B and water level is less so greater tide but if it was at C the water level on the other side is more which doesn't generate more tide than D
Q 19 warm water is less dense so rises up and cold water is more dense and thus sinks which is true for convection in air hot air rises and cold air sinks
Q 24 sound doesn't travel in vaccum and thus window x is better at stopping sound because it has vaccum
Q 32 the live wire is directly taken from the station and is the one which supplys the lamp but the neutral wire is an extra wire which just is used to complete the circuit and also to give current to other equipment so putting a fuse over there won't help when the current is too high or to prevent electrical shock when the lamp is broken as the live is still on
Q 33
the cable becomes hot and melts because the lamp uses a wire that takes less current but when the same wire is used for the kettle it has more current thus more heat so it will become hot and melts
Q 37 the light dependent resistor depends on light the higher the light lower the resistance lower the light higher the resistance
7ooD:
+ rep and hope u understood
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