Physics P22, How was it!

[Albert Einstein]

Alpha particle is a helium nucleus, mass 4u, charge 2p, and helium atom was released and it was isotope of helium atom, Since Gamma has mass 0u and 0p, so for the element to be an isotope, my logic says it should be gamma, and beta has a range of energies???

Still can u pleaz post ur reasoning behind ur desicions ??

 

[yashant]

Question1 graph ?

I made this not sure

dude acceleration goes on decreasing . So graph isnt straight upto terminal velocity .

 

[yashant]

Alpha particle is a helium nucleus, mass 4u, charge 2p, and helium atom was released and it was isotope of helium atom, Since Gamma has mass 0u and 0p, so for the element to be an isotope, my logic says it should be gamma, and beta has a range of energies???

Still can u pleaz post ur reasoning behind ur desicions ??

yeah its gamma

only gamma has such large energy and the charge was same on both sides (i guess)

 

[yashant]

what was the answer for the electricity last part (finding P D)

did someone get 3.2?

 

[yashant]

what was the value for you acceleration of the mass on the spring??

you subtracted the f spring - weight to get f net and then used a = f / m ???
yep i think...dont remember though

acceleration is produced by total force . Since both forces acted downward we actually need to add the force and weight

i got 13 !! (many of my friends got same, dont know if its correct)

 

[Prawesh Dahal]

The question was that what was ONE force acting when the mass is released from the below point and it was TENSION


Gamma Radiations

It was not ONE force...the question asked for FORCES..so its weight and tension

 

[Silent Hunter]

acceleration is produced by total force . Since both forces acted downward we actually need to add the force and weight

i got 13 !! (many of my friends got same, dont know if its correct)

ca you recall the values given like the constant,extension? thank you

 

[Khalifa]

so what did ya write? tension of spring upwards and the weight ?

Yup

 

[Khalifa]

ca you recall the values given like the constant,extension? thank you

Constant was 25? Extension was 0.06+0.16

 

[geek101]

acceleration is produced by total force . Since both forces acted downward we actually need to add the force and weight

i got 13 !! (many of my friends got same, dont know if its correct)

acceleration is produced by a net force, not total force, and if acceleration was upwards then how are both the forces acting downwards :/ it means that there was a larger force acting upwards and a smaller force acting downwards, due to which there was a net force upwards and hence acc. upwards. and i dont remember exactly but my F from the spring was 5.5 N and the weight was 4.2 N, see obviously the upward tension force is bigger and weight downwards is smaller, so ull subtract them, it gives 1.3 N, this is the force that will cause the acceleration, and then divide by the mass. i dunno, this is what seemed logical at that moment

 

[yashant]

acceleration is produced by a net force, not total force, and if acceleration was upwards then how are both the forces acting downwards :/

was acceleration upward?

i thought the question asked downward acceleration(when pulled down). When pulled down ,for acceleration total force is needed right?

 

[Khalifa]

was acceleration upward?

i thought the question asked downward acceleration(when pulled down). When pulled down ,for acceleration total force is needed right?

It asked what acceleration was when you released the spring, so it would be upwards

 

[Silent Hunter]

And what about the first page calculation question? about the speed i think... after drawing the first graph line?

 

[Khalifa]

And what about the first page calculation question? about the speed i think... after drawing the first graph line?

I think it was 140 something?

 

[Silent Hunter]

I think it was 140 something?

i got 140.1

 

[Khalifa]

i got 140.1

Thats it. I wrote 140 though due to the information being given in 3 significant figures

 

[alcoholic 111]

i got 140.1

you should have written in 3 sig. figures
Examiner might deduct 1 mark

 

[alcoholic 111]

no its the one with the cyclist..

Dude you are referring to other variant

 

[alcoholic 111]

It was not ONE force...the question asked for FORCES..so its weight and tension

Maybe
I thought it was of 1 mark question so only 1 force would be enough
Weight was although too obvious

 

[Silent Hunter]

you should have written in 3 sig. figures
Examiner might deduct 1 mark

i did it i think.