Pretty sure you had to assume that was trueWas it wrong to for the flux density to use the max flux and divide it by the area of the circle loop (It didn't say the loop was circular nor that the given length was the diameter, so idk if what i did was right)
Yeah i did exactly what you said. Yeah i don't think any of the graph was curved but to begin with I'm not sure if area under curve = flux density is a true statement to begin withMagnetic field strength is flux per unit area. The maximum flux on the flux vs time graph was 0.6Wb I think so the maximum magnetic field strength over the 12 seconds would be 0.6/Area of the loop. Then for part b), the rate of change of flux (flux vs time) is the gradient of the curve which is voltage and then you use the right hand grip rule or something else to find direction. I don't think you had to find the area under the flux vs time curve for anything and you really couldn't do so either because part of it was curved if I remember correctly.
Yea area under Flux/time curve isn't magnetic field strength pretty sure we're correct.Yeah i did exactly what you said. Yeah i don't think any of the graph was curved but to begin with I'm not sure if area under curve = flux density is a true statement to begin with
Yep finding area under the curve would mean finding the integral of the curve which is clearly wrong. 0.6/Area is correct and for part b yep you had to use faraday's law and it was 0.3 Volts and P was positive using right hand group ruleMagnetic field strength is flux per unit area. The maximum flux on the flux vs time graph was 0.6Wb I think so the maximum magnetic field strength over the 12 seconds would be 0.6/Area of the loop. Then for part b), the rate of change of flux (flux vs time) is the gradient of the curve which is voltage and then you use the right hand grip rule or something else to find direction. I don't think you had to find the area under the flux vs time curve for anything and you really couldn't do so either because part of it was curved if I remember correctly.
I got from memory around 9mdid anyone else get 10.9 metres for the range of the projectile?
i got 8.8. is that about right??I got from memory around 9m
was Ux 10 or am I retarded?I found time to be 2.18, then Delta X = ux T
which is 2.18 x 5 = 10.9 metres
I agree with you and the solution, the force on the magnet is down so there's an additional force of BIl on top of the weight force and yea we divide by 9.8 for masswhat did you guys get for question 17 mc:
This is the answer from solutions from competitor website lo:
"17 - B , force on magnet is downwards by the right hand slap rule, so the scale reading will be higher (I'm 90% sure). Since the unit is kilograms, it is measuring mass, so we compensate by dividing the force by 9.8."
I did this but my friends said i was wrong and it was "minus" instead of plus
Where did you find solutions?what did you guys get for question 17 mc:
This is the answer from solutions from competitor website lo:
"17 - B , force on magnet is downwards by the right hand slap rule, so the scale reading will be higher (I'm 90% sure). Since the unit is kilograms, it is measuring mass, so we compensate by dividing the force by 9.8."
I did this but my friends said i was wrong and it was "minus" instead of plus
Idk if it will let me say the site name on this without getting banned. It's just in hsc exam discussion 2017 for another site if you look for it you'll find itWhere did you find solutions?