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Ricky Martin - Livin' La Vida Loca
Hear this while studying
Hear this while studying
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you posted in the wrong thread. this is physics doubts threadRicky Martin - Livin' La Vida Loca
Hear this while studying
you posted in the wrong thread. this is physics doubts thread
thanksQ13
distance of upper string from centre opf Q = 100/2 = 50mm=0.05m
distance of upper string from centre of p = 150/2=75mm=0.075m
tension in upper string = torque/distance = 3 Nm / 0.05 m = 60 N
torque on P = force*distance = 60 * 0.075 = 4.5
Q14
the horizonal velocity will remain the same. the vertical velocity will be zero at that time. so the kinetic energy will be due to horizontal velocity alone which is vcos45 = v √2/2
kinetic energy at max point = 1/2 * m * (v √2/2)² = [1/2 m v² ]* 1/2 (the thing in square brackets is equal to kinetic energy at the begining) so k(max)=0.5K(initial)
it cnt show the reading of 6A for two resistors...Okay. So for option A to be correct, it should also have a reading of 6A as per your example. Can you please explain how it will show a reading of 6A if the two resistors are of 2 ohms each and the power supply of 12V? Thanks!
All about Electrostatics..Hey guys, can someone please provide me with notes of the AS level topic regarding electric field,electric charge, etc ?
I like them .have you made them for other topics if so please post it would be really helpfulAll about Electrostatics..
These r my own notes... hope they help
All about Electrostatics..
These r my own notes... hope they help
yeap very very helpfulI like them .have you made them for other topics if so please post it would be really helpful
Thanks in advance
Its a standing wave, so the 33cm is the distance between two nodes. The wavelength thus becomes .66m. F = 330/. = 500. T = 1/500 = 0.002s = 2ms. B is the right answerhttp://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s12_qp_12.pdf
Hey, I am having problems explaining question 30,
The marking scheme gives the answer as B but i still think the answer is D
Can someone answer this question especially the b part... I would really be grateful
If so , then why they used mass of photon as mass of meson/2 ?Gamma particles have no mass and that 2 means 2 gamma particles not 2 moles gamma particles like in a a chemical equation. Gamma particles are electromagnetic waves (photons) hence have no rest mass like other electromagnetic waves. You cannot use stoichiometrice ratio like in chemistry and electrons and gamma particles are different. Electrons exhibit wave-particle duality unlike gamma particles.
I don't have much detail answers about that it's just what i learned in two years. But I think any particle when is at speed of light it will have mass. Hence I said rest mass is zero for gamma particles. In A-levels I think gamma particles not having mass is sufficient.If so , then why they used mass of photon as mass of meson/2 ?
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s09_qp_2.pdf
2nd variant, q7 when switch s1 and s2 both are closed , why is it R?
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s10_qp_11.pdf
q7, q11
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s11_qp_11.pdf
q37
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s12_qp_11.pdf
q24, q26
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s12_qp_12.pdf
q14, q15, q17, q18, q29, q30, q35, q37
Q: A number of identical springs, each having the same spring constant, are joined in four arrangements. A different load is applied to each arrangement.
Which arrangement has the largest extension?
A: 2 springs in series; 2N
B: 3 springs in series; 1N
C: 2 springs parallel; 6N
D: 3 springs parallel; 8N
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w10_qp_12.pdf
q22, q25
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w10_qp_13.pdf
q10
IMP: http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w12_qp_12.pdf
q23
Sorry I know this is a lot of questions! >< please help!
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