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  1. V

    Hydrogen Iodide reducing agent? AS theory!

    HI has longer covalent bond than other hydrides in the group vII that we study... So longer bond has requires less energy to dissassosiate ... when HI dissociates it produces H+ as proton and the reduction is to lose a proton and hence it is a good reducing agent...
  2. V

    can any one please help me with this phy p4 question

    Work done on the gas= Pressure* change in volume u can use this formula to get the work done on the gas ... remember it is work done on the gas and for internal energy u can use u=q+w
  3. V

    Maths P1.. HELP needed!!

    two ways to solve the problems... first: find "x" in terms of "y" then differentiate it by using chain rule.... keep the value of dx\dt.. and you'll get the answer secod: directly start differentiating with respect to "t". use chain rule to differentate the right side and ull recieve the...
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    MIND OPENING QUESTIONS

    obviously .. 3 mins..
  5. V

    A2 physics electric potential sign conventions

    if its attractive then it is negative if repulsive then always positive .. ... thats y the gravitational potential is alwayz negative...
  6. V

    Maths p3 help

    Hi every one... i want help to solve the polar complex numbers ... how to find out the value of "r" and when the arguments are supplied to us.... help please... urgent..>!!!
  7. V

    Physics Amplitude-Modulation

    the actual amplitude of the modulated wave form should differ from 3.5 to 4.5 as far as i know. this question does not require any calculations. you are provided with the informations only. in the question the frequency of the carrier wave is 750 khz so the frequency of the modulated wave is...
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