2012 Higher Physics Discussion

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Can anyone tell me what I am doing wrong here? The answer is A

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Reply 1182

Original post by humza100

All my "Physics Abilities" are is being able to look up the answer and explain how to get it, it doesnt make me any better at physics, even now im procrastinating with the exam being tomorrow! :eek:

I don't even think it has sunk in yet that tomorrow is MY LAST EXAM WOOOO :biggrin:

Reply 1183

Original post by humza100

i meant what use would they be to you :tongue:

They can just reuse them for next year, or give them to the teachers ( but teachers should have loads of data books anyway)

Idk then, maybe to satiate any burning desires you may have to know some electron arrangements? :L

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Reply 1184

TheFOMaster

Original post by koolkate

Can anyone tell me what I am doing wrong here? The answer is A

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9.67x10^-20 = 0.967x10^-19

Reply 1185

Original post by koolkate

Can anyone tell me what I am doing wrong here? The answer is A

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9.67x10^-20 rounds to 1x10^-19
Just check the power of ten :smile:

Reply 1186

Original post by koolkate

Can anyone tell me what I am doing wrong here? The answer is A

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Yes, look at the fact your answer is to ^-20 not ^-19. If you move the decimal place forward one place to give your answer to ^-19, it looks like 0.967x10^-19
i.e round up to answer A :smile:

EDIT: too slow :frown:

Reply 1187

TSR923528

Original post by nECS

Idk then, maybe to satiate any burning desires you may have to know some electron arrangements? :L

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LOL, if your anything like me, you sometimes wake up in the middle of the night wondering want the GFM of Iodine is...

Original post by frances007

I don't even think it has sunk in yet that tomorrow is MY LAST EXAM WOOOO :biggrin:

Lucky you, still got 2 more after Physics :frown:

Reply 1188

Guys- have any of you learned MOSFETs well? :/

Reply 1189

Original post by humza100

LOL, if your anything like me, you sometimes wake up in the middle of the night wondering want the GFM of Iodine is...

Lucky you, still got 2 more after Physics :frown:

Which?!!

Reply 1190

Original post by humza100

LOL, if your anything like me, you sometimes wake up in the middle of the night wondering want the GFM of Iodine is...

I fear i may be worse than you, I actually knew what the GFM of Iodine was...gotta focus on physics, then chemistry :s-smilie:

Reply 1191

ilyaasr

Original post by frances007

Guys- have any of you learned MOSFETs well? :/

Not at all. I've been thinking about learning it in detail but I've only learnt how to identify the source, gate and drain and also I think I needs +2v to be switched on

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Reply 1192

Original post by TheFOMaster

9.67x10^-20 = 0.967x10^-19

Thanks can you also help me with these questions?
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Reply 1193

Original post by ilyaasr

Not at all. I've been thinking about learning it in detail but I've only learnt how to identify the source, gate and drain and also I think I needs +2v to be switched on

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more than i know :colondollar:

Reply 1194

TSR923528

Original post by frances007

Which?!!

Geography on 30th and Chemistry on 31st

Reply 1195

Original post by frances007

Yes, look at the fact your answer is to ^-20 not ^-19. If you move the decimal place forward one place to give your answer to ^-19, it looks like 0.967x10^-19
i.e round up to answer A :smile:

EDIT: too slow :frown:

Thank you

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Reply 1196

Original post by nECS

9.67x10^-20 rounds to 1x10^-19
Just check the power of ten :smile:

Thanks

Reply 1197

ilyaasr

Original post by frances007

more than i know :colondollar:

haha! lets hope they don't come up!

Reply 1198

Original post by koolkate

Thanks can you also help me with these questions?
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2) F = ma gives the unbalanced force, which in this case is 400N,
the weight is w = mg, which is 800N, thus, to overcome the weight and provide an unbalanced force of 400N, it must be 1200N (400+800)
so, C

12) Just check your value for the energy, don't think it's quite right

18) 1/Rt = 1/20 + 1/10 + 1/20
1/Rt = 4/20
Rt = 20/4
Rt = 5

so, B

Reply 1199

TSR923528

Original post by koolkate

Thanks can you also help me with these questions?
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