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aqa physics p2 and p3 markscheme ish

question order may be incorrect and some answerstoo.
some questions may have been missed, not on purpose!
p2
the plots don't level off(directly proportional throughtout)

c, resistance opposes currentand this plot has the lowest currentfor any voltage, showing it had themost resistance.

K and L, the metal and diameter werecontrolled so the relationship between length and resistance could be seen
Test other metals but keep lengthand diameter controlled.

positively charged

theythey expected that the positively charged alpha particles would be slightly deflected by the electrons in the plum pudding model,but the large deflections meant the positivecharges are repelling and therefore thatthe electrons and protons are separate.

they made lots of measurementsso their experiment was reliable (probsother things too)

neutrons/protons relative mass of 1electrons relative mass of 1/2000neutrons/protons in the nucleuselectrons on shellslots of empty spaceneutrons are neutralelectrons are 1-protons are 1+

nucleur fission, the splitting of an unstablesubstance into two daughter nuclei and neutronsa neutronlike charges repel and the nuclei are positive

velocity increases, resultant force upwardsbraking distance is the distance

velocity has direction
travelled fromthe brakes being pressed to the car completelystoppingaffected by

tread depth of wheels (amongother things)

momentum before a collision is equal to themomentum after a collision.

resistor is a rectangle with a line going through

voltmeter connected to wire in paralleltemperature increases when currentincreases. Resistance increases with temperature as atoms vibrate more, makingit harder for current to flow through
larger angle, higher max heightlarger angle, faster to get to max heightbut doesn't stay there for as long.
charge-51
energy- 3.6
height-7.2
momentum qu - 5m/s
max speed- 21.9??can't remember any others.feel free to comment with corrections!
same goes for p3,
1.25/1.3 (as they gave the 0.80 to 2 s.f)

mass doesn't affect the number of oscillations
longer length = less oscillations

redo each length/mass three times and createa meanwasn't really sure for the second onebut wrote do mass at larger intervalsas no pattern is currently obvious??
The letter that was the inward forcea wrote thrust but not confident is that at all!
1. mass of car2. speed of car(could have radius aswell)
1. wide base2. low centre of mass
interaction between the permanent magnet'smagnetic field and the wire's magnetic fieldthe wire needs a current to have a magnetic fieldthe motor effectupwards or down dno for this one??ac- moves upwards and downbecause the magnetic field from the wire isconstantly changing which causes the directionof the force to changeThe centre of mass of the bus shifts andthe line of action falls outside of the base,resultant moment cause bus to topple over.1. to test how the bus would behave in an extreme situation2. the bus may behave differently with peopleon board so must make sure it can withstandlarger angles.suspensory ligaments, retinashort sightednessto focus on distant/close objectsconstantly changing magnetic fieldin primary coil felt by the secondary coil, induces voltage. as it is linkedto a circuit a current flows as a result.liquid is incompressible.84,000can't remember other calculations.