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A2 Physics | Post your doubts here
(A)Electrons in a cathode-ray tube leave the cathode with negligible speed at a potential of -9000V and are accelerated to an anode at a potential of -200V. For an electron in this tube calculate (i) the gain in electrical energy (ii)the loss in potential energy (iii)the gain in kinetic energy... -
A2 Physics | Post your doubts here
i was doing that paper and found it confusing .. :/ -
A2 Physics | Post your doubts here
i need mark scheme for june 99 .. any help ? -
A2 Physics | Post your doubts here
Q1 c part 1 (Electric field) Q2 b part 3 (complete the table) -
Physics: Post your doubts here!
hi, May/june 10/43 q6 b1 anyone plz... -
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Chemistry: Post your doubts here!
Hello, i need help in kinetics...as i knoow slowest step is the rate determining step but how to find this, thats my qs. its Qs.2 part3 of b. Thankyou. -
Chemistry: Post your doubts here!
Can you explain it in terms of L.E and enthaloy of Hydration... -
Chemistry: Post your doubts here!
Hi, I need help as i am not able to understand fully the markscheme answer. Q. the trend of solubility of group2 sulfates. Q. the trend of stability of carbonates and nitrates of group2 metals. thankyou... -
i need a little favour:
salam, i posted a thread before regarding addresses of p4 chem and phy. I've got physics topics addresses for p4 but still waiting for p4 chem. if anyone knows where to get them like any shop in main/mini market or else or if anybody hav them please tell me i'm from Lahore... Thankyou... -
addresses
Salam, i need addresses of P4 chemistry and physics. i repeat it if anyone didnt get me ,i want topic addresses for p4 chem and phy like e.g in which year does the topic electrochemistry qs /part came... i'll be very thankful if anyone let me know where to get them. Regards... -
Physics MCQs thread.
Q 36 M/J 2010 V11 urgent plzzz explain your ans plzzzz -
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Physics MCQs thread.
http://www.xtremepapers.me/CIE/index.ph ... _qp_11.pdf qs 17,29 with explaination and 36 -
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Physics MCQs thread.
Two equal masses travel towards each other on a frictionless air track at speeds of 60 cm s–1 and 40 cm s–1. They stick together on impact. 60cms–1 40cms–1 What is the speed of the masses after impact? A 10 cm s–1 B 20 cm s–1 C 40 cm s–1 D 50 cm s–1 how to find speed of mases ....??