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  1. amna shah

    Computer studies ! Post your doubts here =)

    hello ... can anyone explain why the dry run of Q 7 of W/11/11 n Q7 of W/11/13 are different at start ? im just confused about when we have to write the count and the input number .. like if u see that in one marking scheme the input number is along the count but in the other one the input...
  2. amna shah

    Biology; Chemistry; Physics: Post your doubts here!

    how is ethanol a waste product ?? This process is used to make ethanol .. or may be is it related to Bio ?
  3. amna shah

    Biology; Chemistry; Physics: Post your doubts here!

    1) how to focus the image made by a converging lens in camera ?? 2) Explain in terms of bond breaking and bond making why reaction of (some reaction) is exothermic ?? how to answer these type of Q's ??
  4. amna shah

    Biology; Chemistry; Physics: Post your doubts here!

    WHAT ARE THE PRODUCTS OF REACTION BETWEEN ACID AND SULFATE/CHLORIDE SALTS .. WE ALL KNOW OXIDES PRODUCE H2O AND CARBONATES CO2 AND H2O BUT THERE IS NO MENTION OF SULFATES/CHLORIDE ALSO IN THE DECOMPOSITION THERE IS NO DECOMPOSITION TABLE FOR SULFATES CHLORIDES ETC AND THEY ARE COMMON IN EXAMS...
  5. amna shah

    Biology; Chemistry; Physics: Post your doubts here!

    YEAH IT HELPED A LOT THANKS ... :) SO IF A CAR GOES UP FROM REST A HILL AND DOWN AND STOPS, WHAT WILL BE THE TOTAL ENERGY CHANGE ?
  6. amna shah

    Biology; Chemistry; Physics: Post your doubts here!

    WHAT IS INTERNAL ENERGY ?? IM VERY CONFUSED WHEN IM READING THE MARKING SCHEMES OF THE QUESTIONS IN WHICH WE HAVE TO DESCRIBE THE TOTAL ENERGY CONVERSION, MOST OF THE TIME THE ENERGIES END UP AS INTERNAL ENERGY .. PLEASE EXPLAIN HOW AND WHEN DOES THIS HAPPEN ... GIVE AN EXAMPLE IF YOU CAN .. THANKS
  7. amna shah

    Biology; Chemistry; Physics: Post your doubts here!

    can anyone tell me in QUESTION 5 OF PHYSICS PAPER 2 SUMMER 05 ....... HOW DO YOU FIND OUT THE DIRECTION OF THE CURRENT ? AS THEY HAVE NOT MENTIONED ANY ARROW OR SIGN ON THE BATTERY ... AND IN GENERAL TO FIND THE DIRECTION OF CURRENT IN A CIRCUIT/SOLENOID IF ITS NOT MENTIONED AS THEY CAN ASK YOU...
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