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# Urgent A level Physics help! :(

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1. Can someone please help me with these two questions, it's my homework The first question, I don't know much about the "Newton meter" and I don't get the second question, thanks in advance <3

2. (Original post by hamza772000)
Can someone please help me with these two questions, it's my homework The first question, I don't know much about the "Newton meter" and I don't get the second question, thanks in advance <3

For the first - Newton metre (for pressure I believe), nanometre, millimetre and megametre? Then state SI units to show the difference I guess

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3. (Original post by Matrix123)
For the first - Newton metre (for pressure I believe), nanometre, millimetre and megametre? Then state SI units to show the difference I guess

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I know what they are lol I just don't know how to show the Newton metre derived in base units to compare the 4....
4. (Original post by hamza772000)
I know what they are lol I just don't know how to show the Newton metre derived in base units to compare the 4....
Idk, tbh I'd just leave it as Newton metres
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5. (Original post by Matrix123)
Idk, tbh I'd just leave it as Newton metres
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No worries, I'll wait n see if someone else can help, thanks anyways
6. (Original post by hamza772000)
No worries, I'll wait n see if someone else can help, thanks anyways
OK no worries

But for the second one, wouldn't it just be kg/cubic metre?
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7. (Original post by Matrix123)
OK no worries

But for the second one, wouldn't it just be kg/cubic metre?
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Yeah, seems like it, how'd you get to that though?
8. Idk I googled it. This popped up.
https://www.conversion-metric.org/le...meter-to-meter
9. Well hey there, the first unit is a Newton metre, the others are different multipliers of the Newton
10. (Original post by saraxh)
Idk I googled it. This popped up.
https://www.conversion-metric.org/le...meter-to-meter
Nope, I googled it before making this thread, I'm just a little unclear
11. (Original post by hamza772000)
Yeah, seems like it, how'd you get to that though?
We did it in our lesson. If you look up the density formula, it's:
density=mass/volume
P=m/V
Kgm^-3 =Kg/m^3

Where P= Greek letter 'rho'

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12. (Original post by hamza772000)
Yeah, seems like it, how'd you get to that though?
Right, so do you know what the 7 base units are?

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13. (Original post by Andy98)
Well hey there, the first unit is a Newton metre, the others are different multipliers of the Newton
Yes, I know that It just tells me to state the difference between them, should I just write their names? it's 3 marks and besides I can write the last 3 in base units(I think this form is also called that) i.e 1*10^-9 but how would I go about writing the first one? The Newton metre?
14. (Original post by Matrix123)
We did it in our lesson. If you look up the density formula, it's:
density=mass/volume
P=m/V
Kgm^-3 =Kg/m^3

Where P= Greek letter 'rho'

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I was gonna go a different way altogether

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15. (Original post by Andy98)
I was gonna go a different way altogether

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Fair enough, I don’t really know where I'm going 100% tbh

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16. (Original post by Matrix123)
We did it in our lesson. If you look up the density formula, it's:
density=mass/volume
P=m/V
Kgm^-3 =Kg/m^3

Where P= Greek letter 'rho'

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Ah, I see thanks makes sense

(Original post by Andy98)
Right, so do you know what the 7 base units are?

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Indeed
17. (Original post by hamza772000)
Can someone please help me with these two questions, it's my homework The first question, I don't know much about the "Newton meter" and I don't get the second question, thanks in advance <3

Sorry hamza I can't help I didn't do physics at A levels
18. (Original post by hamza772000)
Ah, I see thanks makes sense

Indeed
No worries Hamza

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19. (Original post by hamza772000)
Yes, I know that It just tells me to state the difference between them, should I just write their names? it's 3 marks and besides I can write the last 3 in base units(I think this form is also called that) i.e 1*10^-9 but how would I go about writing the first one? The Newton metre?
That isn't a base unit, it's standard form, for base units think about your formulas. Which formulas involve Force?

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20. (Original post by Andy98)
That isn't a base unit, it's standard form, for base units think about your formulas. Which formulas involve Force?

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I know force in base units= kgms^-2

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