- Messages
- 872
- Reaction score
- 894
- Points
- 103
No effect on time...not sure aboutvanplitudeWhat happens to time and amplitude if during oscillation half the mass gets detached at the highest point?
We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
Click here to Donate Now (View Announcement)
No effect on time...not sure aboutvanplitudeWhat happens to time and amplitude if during oscillation half the mass gets detached at the highest point?
even I don't get why .39 is multiplied again. :/ohh k i understand but i am confused in the end why did u multiplied .39*.33 again with .39?
even I don't get why .39 is multiplied again. :/
and can somebody tell me where (-1.5) came from? In question 9bi?
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s10_qp_41.pdf
lol. thanks yo!You actually use the formula: Vout= gain* Vin
Vout = -3.5 * -1.5
-1.5 because it's connected to the negative terminal of the battery!
How many significant figures does our answer needs to be in a level physics paper 4?
i have been doing pastpapers and i loose a lot of marks by writing the answer in wromg number of significant figures!
can the examiner penalise me in every question or just once in the whole paper?
Guys, can someone explain Q 7 c) SHould high frequency mean higher rate of emission of electrons?
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s13_qp_43.pdf
From the graph, when amplitude (x) is .60 cm energy is 4mJ.http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w13_qp_42.pdf
Please help me with qn no. 3(b)ii.. how do you calculate the total energy?
Thanks
I thought that depended on the values given in the question. If they are all given in 2 s.f shouldn't t your final answer be in 2 s.f as well?3 significant figures or 1 decimal place. Its given in the instruction of the question paper only.
Both are acceptable.In paper 5 and 3, how do we plot the points?
Do we enclose points in a circle or use a cross?
So why don't we consider the Ke while calculating the total energy?From the graph, when amplitude (x) is .60 cm energy is 4mJ.
Yeah high frequency means high photon energy. But why does it mean that there will be less photons arriving per unit time?If the intensity is increased, more photo-electrons are emitted, but they have same max k.e.
Max k.e depends on frequency, i.e high frequency means high k.e.
I thought that depended on the values given in the question. If they are all given in 2 s.f shouldn't t your final answer be in 2 s.f as well?
Why does the ms say that there are less photons arriving per unit time?The no. of photons arriving per unit time depends on intensity. It doesn't depend on frequency. If less photons are arriving that means the intensity is less!
For almost 10 years, the site XtremePapers has been trying very hard to serve its users.
However, we are now struggling to cover its operational costs due to unforeseen circumstances. If we helped you in any way, kindly contribute and be the part of this effort. No act of kindness, no matter how small, is ever wasted.
Click here to Donate Now