physics 22

[rabos1]

I mean pq distance*

 

[sam1234]

find the deceleration by 14/0.4=-35 and then distance by 2as=v2-u2 where u was 2.4ms the line was a straight line

The force wasn't constant throughout the motion, hence we had to take out average force acting on the object, and use the formulae work done = force * distance, for which we get 0.18 m

 

[rabos1]

The force wasn't constant throughout the motion, hence we had to take out average force acting on the object, and use the formulae work done = force * distance, for which we get 0.18 m

Are you sure? Equation of motion was not used?

 

[vishal]

hey guys plz mark me on my answers

q1)
proved the units ...and i gues i found the units fr C correctly

q2)
for radio waves i took the speed of light.....dividd the time by 2 ...and by using the formula s=d/t....i found the distance

Q3)
proved ek to 1.3 and my pq disnce was 0.089 and for graph i drew a negative gradient line

q4)
found the torque...........two foces were weight and reaction...dont remember the last 2 parts

q5)
amplitude wsa 40mm and speed was i suppose 7.5.....and for the waves i drew a straight line........in the lsat 2 parts i wrote progrssve and transverse

q6)
proved the resistance..........found the current and power...and for the lst prt i wrote power loss would reduce...

q7)
the driection remaind same....by increang the spacing and dcrsing the voltage we can reduce electic field

q8)
for alpha and beta i wrote about the charges...thier mases....discontinous and continous spectrum and the last part was very easy...

 

[sam1234]

Are you sure? Equation of motion was not used?

I guess so. Because the force wasn't constant it was changing with the distance.

 

[rabos1]

hey guys plz mark me on my answers

q1)
proved the units ...and i gues i found the units fr C correctly

q2)
for radio waves i took the speed of light.....dividd the time by 2 ...and by using the formula s=d/t....i found the distance

Q3)
proved ek to 1.3 and my pq disnce was 0.089 and for graph i drew a negative gradient line

q4)
found the torque...........two foces were weight and reaction...dont remember the last 2 parts

q5)
amplitude wsa 40mm and speed was i suppose 7.5.....and for the waves i drew a straight line........in the lsat 2 parts i wrote progrssve and transverse

q6)
proved the resistance..........found the current and power...and for the lst prt i wrote power loss would reduce...

q7)
the driection remaind same....by increang the spacing and dcrsing the voltage we can reduce electic field

q8)
for alpha and beta i wrote about the charges...thier mases....discontinous and continous spectrum and the last part was very easy...

You're getting A in p2..

 

[Abhi Mevawala]

guyzz in calculatin speed how was the wavelength 1.5 m
i took it 80 mm

 

[Abhi Mevawala]

guyzz to get 90 plus as a overall physicsz marks in AS level how much we r supposed to get in P2?

 

[sam1234]

If u wrote

hey guys plz mark me on my answers

q1)
proved the units ...and i gues i found the units fr C correctly

q2)
for radio waves i took the speed of light.....dividd the time by 2 ...and by using the formula s=d/t....i found the distance

Q3)
proved ek to 1.3 and my pq disnce was 0.089 and for graph i drew a negative gradient line

q4)
found the torque...........two foces were weight and reaction...dont remember the last 2 parts

q5)
amplitude wsa 40mm and speed was i suppose 7.5.....and for the waves i drew a straight line........in the lsat 2 parts i wrote progrssve and transverse

q6)
proved the resistance..........found the current and power...and for the lst prt i wrote power loss would reduce...

q7)
the driection remaind same....by increang the spacing and dcrsing the voltage we can reduce electic field

q8)
for alpha and beta i wrote about the charges...thier mases....discontinous and continous spectrum and the last part was very easy...

If u wrote transverse and progressive why did u draw a straight line, it wasn't a stationary wave, the new wave drawn should have been 1/4 of the wavelength towards the right.

 

[rabos1]

Oh yeah I forgot the fact that acc is not constant so no use of equation of motion... :/

 

[Abhi Mevawala]

ya so the ans is 0.18
i got it wrong

 

[vishal]

You're getting A in p2..

really...tht gives me sort of relief.........

 

[vishal]

ya

If u wrote

If u wrote transverse and progressive why did u draw a straight line, it wasn't a stationary wave, the new wave drawn should have been 1/4 of the wavelength towards the right.

yap....i know i messed up tht part..

 

[Tirtho Sarker]

hey guys plz mark me on my answers

q1)
proved the units ...and i gues i found the units fr C correctly

q2)
for radio waves i took the speed of light.....dividd the time by 2 ...and by using the formula s=d/t....i found the distance

Q3)
proved ek to 1.3 and my pq disnce was 0.089 and for graph i drew a negative gradient line

q4)
found the torque...........two foces were weight and reaction...dont remember the last 2 parts

q5)
amplitude wsa 40mm and speed was i suppose 7.5.....and for the waves i drew a straight line........in the lsat 2 parts i wrote progrssve and transverse

q6)
proved the resistance..........found the current and power...and for the lst prt i wrote power loss would reduce...

q7)
the driection remaind same....by increang the spacing and dcrsing the voltage we can reduce electic field

q8)
for alpha and beta i wrote about the charges...thier mases....discontinous and continous spectrum and the last part was very easy...

i cant tell anything about 2 as everyone's confused..pq should have been 0.18...amplitude 20mm(i did this wrong as well)..and wave 1/4 to the right..and power loss would increase as resistance increases with decreasing cross sectional area.other then that all looks good.

 

[22shimmer22girly]

Can the force on the wheel be air resistance?

EXACTLY !!!! THAT IS EXACTY WHAT I WROTE !!!

 

[Zameer Osman]

Can anyone please confirm the answers of number 2. And I factor that is it a stationary or a transverse wave. An I think the distance PQ was not 0.089, it was rather 0.18.

 

[Zameer Osman]

the factor*
And*

 

[sam1234]

Can anyone please confirm the answers of number 2. And I factor that is it a stationary or a transverse wave. An I think the distance PQ was not 0.089, it was rather 0.18.

Ans for q2 was 120m and pq is 0.18m and the wave was transverse and progressive.

 

[Zameer Osman]

no equations of motions are used for PQ?

 

[sam1234]

How

EXACTLY !!!! THAT IS EXACTY WHAT I WROTE !!!

how can air resistance act on a wheel? I think the ans was weight of the wheel and the normal reaction force between the pin and the wheel.