Edexcel A Level Physics Paper 1: Advanced Physics I 9PH0 01 - 26 May 2022 [Exam Chat]

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Reply 80

Hpandswfan

Original post by rnvipfc

- F = mrw^2
- Moment = Fx
- directly proportional

I used those equations too but how do we know whether it’s directly proportional?

Reply 81

bleepo

Original post by Hpandswfan

So the power is force x velocity and force is equal to horizontal component of weight + resistive force

Wait why’s it the component of weight + the resistive force? Wouldn’t the resultant force be Component of weight - the resistive force

Reply 82

Salako19

I just put arrow backwards with rear tyre frictional force. Down arrow with weight and up arrow with reactionary force. Could be wrong tho :frown:

Reply 83

Hpandswfan

Original post by bleepo

Wait why’s it the component of weight + the resistive force? Wouldn’t the resultant force be Component of weight - the resistive force

I thought they were both in the same direction

Reply 84

bleepo

Original post by rnvipfc

- F = mrw^2
- Moment = Fx
- directly proportional

Bruh I spoke about w=2pi/T so if w increases t decrease and E= -ndfaraday/dt so magnitude of emf would increase is that not right 💀

Reply 85

Hpandswfan

Original post by Salako19

I just put arrow backwards with rear tyre frictional force. Down arrow with weight and up arrow with reactionary force. Could be wrong tho :frown:

I thought the horizontal backwards arrow was air resistance but yeah that wouldn’t make sense since deceleration is constant

Reply 86

bleepo

Original post by Hpandswfan

I thought they were both in the same direction

I don’t think I read it right did it say it was gonna go down the slope or up

Reply 87

redbricks

I did this but I got 76. Something Watts somehow?

Original post by Hpandswfan

So the power is force x velocity and force is equal to horizontal component of weight + resistive force

Reply 88

Hpandswfan

Up I think

Original post by bleepo

I don’t think I read it right did it say it was gonna go down the slope or up

Reply 89

rnvipfc

maybe, im not sure, all i know is this thread giving me anxiety about my answers

Original post by bleepo

Bruh I spoke about w=2pi/T so if w increases t decrease and E= -ndfaraday/dt so magnitude of emf would increase is that not right 💀

Reply 90

bleepo

Oh okay that makes sense ffs I wish i read it right

Reply 91

bleepo

Original post by rnvipfc

maybe, im not sure, all i know is this thread giving me anxiety about my answers

same :/ we still have 2 more papers to go so we can make up for whatever we think we’ve got wrong

Reply 92

bleepo

I’ve made so many silly mistakes this test ffs

Reply 93

bleepo

Do you guys remember which questions were which? I’m tryna summarise the whole paper in my head
I know 11. was the power question, what was question 12 onwards?

Reply 94

irradiatedbatty

Original post by Salako19

I just put arrow backwards with rear tyre frictional force. Down arrow with weight and up arrow with reactionary force. Could be wrong tho :frown:

yea i think that's it, part A stated that the bike was traveling at a constant velocity so all arrows in each axis must be the same length as no resultant force

(edited 1 year ago)

Reply 95

tonkkus

Original post by bleepo

Bruh I spoke about w=2pi/T so if w increases t decrease and E= -ndfaraday/dt so magnitude of emf would increase is that not right 💀

yeah I put this. Higher w means higher value of N/t in faradays so higher induced emf :smile:

Reply 96

irradiatedbatty

Original post by tonkkus

yeah I put this. Higher w means higher value of N/t in faradays so higher induced emf :smile:

same

Reply 97

crosl105

hey guys, how did you lot find the exam?

Reply 98

tonkkus

Original post by bleepo

Bruh I spoke about w=2pi/T so if w increases t decrease and E= -ndfaraday/dt so magnitude of emf would increase is that not right 💀

But u might lose a mark if u said the t in w=2pi/t is the same t as in faradays cos its not they're just correlated

Reply 99

bleepo

Original post by tonkkus

But u might lose a mark if u said the t in w=2pi/t is the same t as in faradays cos its not they're just correlated

Yeah I didn’t say that.. I said because time period is decreasing then the rate of change of flux would increase (i think)

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Edexcel A Level Physics Paper 1: Advanced Physics I 9PH0 01 - 26 May 2022 [Exam Chat]

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