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Current Year 13 Thread (2013/14) - Mark I Watch

1. (Original post by usycool1)
Finished my maths homework at last Took me a good 2 weeks...
2. (Original post by usycool1)
Finished my maths homework at last Took me a good 2 weeks...
I've hit a brick wall and don't understand work, energy and power...

Can anyone help?
3. (Original post by Tee Logan x)
Nope, it was just a homework! But thanks!

(Original post by L'Evil Fish)
I've hit a brick wall and don't understand work, energy and power...

Can anyone help?
Post a question?
4. (Original post by L'Evil Fish)
I've hit a brick wall and don't understand work, energy and power...

Can anyone help?
What about them? I'll see if I can remember, I'm retaking that exam so I should be able to
5. (Original post by L'Evil Fish)

Fast and Furious.

It's horrible, I wonder how they salvaged his body..

He was going to a charity event too that or a test drive or something with his friend.

But it's fast and furious guy
You seen his cut face on tiwtter? Its terrible. Sad to see him go.
6. (Original post by usycool1)
Finished my maths homework at last Took me a good 2 weeks...
Congrats
7. (Original post by usycool1)
Nope, it was just a homework! But thanks!

Post a question?
(Original post by furryface12)
What about them? I'll see if I can remember, I'm retaking that exam so I should be able to
Like work done against resistive forces..

Does that include gravity?
If it's given is it just resistive force multiplied by distance for work done

If I know a force constant in a spring and it's extension. How do I find the max height a ball sprung off it can reach if I know the mass?
(Original post by Blueray2)
You seen his cut face on tiwtter? Its terrible. Sad to see him go.
Yeah
8. Lost ITV along with half the country

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9. (Original post by g.k.galloway)
Lost ITV along with half the country

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Yeah we did too. Works on their HD channel though, try that if you have it

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10. (Original post by L'Evil Fish)
Like work done against resistive forces..

Does that include gravity?
If it's given is it just resistive force multiplied by distance for work done

If I know a force constant in a spring and it's extension. How do I find the max height a ball sprung off it can reach if I know the mass?
I can't remember, sorry I think the spring stuff may be the reason I failed the unit first time round actually

(Well I didn't actually fail it, but it was enough to bring me down a grade overall )

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11. (Original post by L'Evil Fish)
Like work done against resistive forces..

Does that include gravity?
The work done against gravity is equal to the change in GPE.
If it's given is it just resistive force multiplied by distance for work done
It's resistive force multiplied by the displacement moved in the direction of the resistive force.

If I know a force constant in a spring and it's extension. How do I find the max height a ball sprung off it can reach if I know the mass?
Ignoring losses, the kinetic energy transferred to the ball is equal to the elastic potential energy stored in the string due to its extension.
12. (Original post by furryface12)
I can't remember, sorry I think the spring stuff may be the reason I failed the unit first time round actually

(Well I didn't actually fail it, but it was enough to bring me down a grade overall )

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No worries
(Original post by Felix Felicis)
The work done against gravity is equal to the change in GPE.

It's resistive force multiplied by the displacement moved in the direction of the resistive force.

Ignoring losses, the kinetic energy transferred to the ball is equal to the elastic potential energy stored in the string due to its extension.
Thank you!

Yeah it just seems for two marks I must be doing something wrong. It says average resistive force is 250N and the vertical drop is 550m. So I just multiplied for work done against resistive force.

Strain energy = work done

1/2 kx^2
= E_s

E_s = 1/2 m v^2

So we find v, does that give us the initial velocity? And then would we suvat with final speed = 0?
13. First summative report mark is meant to be back today the waiting for the email to notify of collection is horrible
14. (Original post by Lucy96)
Yay which uni?

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Liverpool. I've now got 4 offers and am waiting on the 5th (Surrey) to make a decision.
15. (Original post by Paparazzo)
Liverpool. I've now got 4 offers and am waiting on the 5th (Surrey) to make a decision.
Yay ooh great! I'm patiently waiting for my last two

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16. Did/does anyone have a job while doing a levels? and does it effect grades because i have a part time job and kinda feel it may start getting in the way. should i leave?
17. (Original post by Millerman)
Did/does anyone have a job while doing a levels? and does it effect grades because i have a part time job and kinda feel it may start getting in the way. should i leave?
I've got a part time job and I don't think its affecting me much as I only work 1 day a week (sunday). When it gets closer to exams ill just ask for study leave
18. (Original post by g.k.galloway)
Lost ITV along with half the country

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What how?
(Original post by Millerman)
Did/does anyone have a job while doing a levels? and does it effect grades because i have a part time job and kinda feel it may start getting in the way. should i leave?
Where do you guys work? I mean would they just let you go on study leave?
(Original post by ItsJustMe17)
I've got a part time job and I don't think its affecting me much as I only work 1 day a week (sunday). When it gets closer to exams ill just ask for study leave
19. (Original post by Blueray2)
What how?

Where do you guys work? I mean would they just let you go on study leave?
Haha yeah I work at clarks, if I give them notice they'll give me the week I need off
20. It's lovely walking home with all the christmas lights on everywhere

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