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  1. D

    AS Biology help!!

    [quot The ans is C. How can get the value?
  2. D

    Physics: Post your doubts here!

    A capacitor of capacitance C1 is charged to a p.d. of V0. The charging battery is then removed. A second capacitor of capacitance C2 is now joined to C1. (C2 is initially uncharged.) (a) What is the final p.d. across the combination? (b) If C2 is now disconnected, discharged and then connected...
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    AS Biology help!!

    Can somebody help me to solve this question? A square metre of grassland receives about 1047000 kJ of solar light energy each year. The table shows what happens to this energy. used in evaporation of water 523500kJ transmitted to the ground 335000kJ reflected by the...
  4. D

    Physics: Post your doubts here!

    13 A particle is in a uniform field. The particle experiences a force in the opposite direction to the field. Which field is the particle in, and on which property of the particle is the field acting? field property of particle on which the field acts A electric...
  5. D

    Physics: Post your doubts here!

    what is not conserved in nuclear processes? A energy and mass together B nucleon number C neutron number D charge Why the answer is neutron number? Is the charge is conserved? someone can help me ??
  6. D

    biology paper 1 doubts

    An enzyme hydrolyses the two heavy polypeptide chains of an antibody molecule. The hydrolysis occurs at the hinge region and breaks the antibody into three fragments. How many of these fragments are able to bind to antigen? A 0 B 1 C 2 D 3 How does the three fragments formed?
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