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Physics 41...How'd it go?

walkthetalk

walkthetalk

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AOA
How many marks was the power loss question btw? i messed up on that one..I found the time taken for the given mass to boil it was like 1.6 mins..then i found the difference between the 2 times and then i dont really know what i did but do u think tht's a valid method..And for the decay q i used N=Ne not A will i lose a mark for that? and what were the 2 reasons? and ufff i didnt convert temp to Kelvin!:mad: just praying for a good grade.....ALso last one for the 2 magnets in MRI what were we supposed to write?!
 
user

user

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SkyPilotage for that finding the resistance one...how did u find Vmean...it was (4 + 2.4 ) / 2?

i did this..and i was like no...square them and then divide by 2 and then square root :giggle: like similar to how we find rms..
 
bestgirl

bestgirl

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what was the answer to which wire experiences greater force if greater current in wire B?
 
earthling

earthling

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bestgirl said:
what was the answer to which wire experiences greater force if greater current in wire B?
Click to expand...
I think it was wire A ...because wire B would have a stronger magnetic filed and hence a stronger force pulls wire A.
 
S

SkyPilotage

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earthling said:
I think it was wire A ...because wire B would have a stronger magnetic filed and hence a stronger force pulls wire A.
Click to expand...
Acually, they both experience the SAME magnitude of forces.
If you want to understand more, check November 42 Question 5 b) !
 
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