aqa physics p2 and p3 Watch

frogememers
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question order may be incorrect and some answers
too.
some questions may have been missed, not on purpose!
p2

the plots don't level off
(directly proportional throughtout)

c, resistance opposes current
and this plot has the lowest current
for any voltage, showing it had the
most resistance.

K and L, the metal and diameter were
controlled so the relationship
between length and resistance could be seen

Test other metals but keep length
and diameter controlled.

positively chargethey

they 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 positive
charges are repelling and therefore that
the electrons and protons are separate.

they made lots of measurements
so their experiment was reliable (probs
other things too)

neutrons/protons relative mass of 1
electrons relative mass of 1/2000
neutrons/protons in the nucleus
electrons on shells
lots of empty space
neutrons are neutral
electrons are 1-
protons are 1+

nucleur fission, the splitting of an unstable
substance into two daughter nuclei and neutrons

a neutron

like charges repel and the nuclei are positive

velocity increases, resultant force upwards

braking distance is the distance travelled from
the brakes being pressed to the car completely
stopping

affected by tread depth of wheels (among
other things)

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

resistor is a rectangle with a line going
through

voltmeter connected to wire in parallel

temperature increases when current
increases. Resistance increases with
temperature as atoms vibrate more, making
it harder for current to flow through

larger angle, higher max height
larger angle, faster to get to max height
but 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,

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 create
a mean
wasn't really sure for the second one
but wrote do mass at larger intervals
as no pattern is currently obvious??

The letter that was the inward force
a wrote thrust but not confident is that
at all!

1. mass of car
2. speed of car
(could have radius aswell)

1. wide base
2. low centre of mass

interactions between the permanent magnet's
magnetic field and the wire's magnetic field
the wire needs a current to have a magnetic field

the motor effect

upwards or down dno for this one??

ac- moves upwards and down

because the magnetic field from the wire is
constantly changing which causes the direction
of the force to change

The centre of mass of the bus shifts and
the 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 situation
2. the bus may behave differently with people
on board so must make sure it can withstand
larger angles.

suspensory ligaments, retina

short sightedness

to focus on distant/close objects

constantly changing magnetic field
in primary coil felt by the secondary
coil, induces voltage. as it is linked
to a circuit a current flows as a result.

liquid is incompressible.

84,000

can't remember other calculations.
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AfcFob
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I put pretty much the same things as you.. Let's hope they're right!😃
What did you put for the X-ray/ultrasound question? The 6marker
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frogememers
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(Original post by AfcFob)
I put pretty much the same things as you.. Let's hope they're right!😃
What did you put for the X-ray/ultrasound question? The 6marker
Oh yeh i neglected that one completely!!
for x-rays wrote about bone images and dental images,
how they're ionising and used in radiotherapy
lead aprons and leaving the room
CT scans to plan surgery and diagnose complicated conditions
ultrasound is safer but fuzzy images
breaking down kidney stones(described that)
pre-natal scanning and investigating the blood flow in organs
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AfcFob
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(Original post by frogememers)
Oh yeh i neglected that one completely!!
for x-rays wrote about bone images and dental images,
how they're ionising and used in radiotherapy
lead aprons and leaving the room
CT scans to plan surgery and diagnose complicated conditions
ultrasound is safer but fuzzy images
breaking down kidney stones(described that)
pre-natal scanning and investigating the blood flow in organs
Yeah I did similar points.
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