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  1. C

    A level Biology: Post your doubts here!

    The answer is C.
  2. C

    A level Biology: Post your doubts here!

    Need help understanding this one too. Stuck between option A and C.
  3. C

    A level Biology: Post your doubts here!

    I now understand why A, B and C are wrong. Can you please once more explain why D js correct? Shouldnt the option say "form strands that fold and twist together to from a chromosome"? Or is their wording the same? Are chromosomes and chromatids the same thing? Individual chromatids are coiled...
  4. C

    A level Biology: Post your doubts here!

    Need help understanding this. Why is the answer not B? As the chromosome does condense during prophase. (The correct answer is D).
  5. C

    Physics: Post your doubts here!

    Can anyone explain this question?
  6. C

    Physics: Post your doubts here!

    I did. Still I dont quite get it.
  7. C

    Physics: Post your doubts here!

    Need help understanding this question.
  8. C

    Physics: Post your doubts here!

    Thank you
  9. C

    Physics: Post your doubts here!

    I have one question related to Dynamics. Suppose you throw a ball at an angle in air, or release it from rest so it falls under free-fall or you throw the ball upwards, there can be only 2 forces acting (air resistance and weight) on the ball? Is there no type of applied force there in the...
  10. C

    Physics: Post your doubts here!

    In this question, is the journey of the object between X and Y considered as projectile motion? As it follows a parabolic path.
  11. C

    Physics: Post your doubts here!

    Thank you.
  12. C

    Physics: Post your doubts here!

    Need help understanding this question. D is the answer.
  13. C

    Physics: Post your doubts here!

    Thank you. I understand why C is wrong.
  14. C

    Physics: Post your doubts here!

    The question implies there is 0 net force (by saying all external forces on a body cancel out which means it must be moving with constant velocity and 0 net force). When the net force is 0, by N2L there shouldnt be any change in speed as fnet=ma. Fnet=0 and 0=ma for even a reducing mass gives 0...
  15. C

    Physics: Post your doubts here!

    I did. Still having this confusion.
  16. C

    Physics: Post your doubts here!

    I understand why option A and D are wrong. However, I dont get how option C is justified. The er says under conditions where mass keeps reducing, the bodys speed can change and it can accelerate. My question is, when a body is moving with constant velocity (zero resultant force) and even if its...
  17. C

    Physics: Post your doubts here!

    Yes. Thank you.
  18. C

    Physics: Post your doubts here!

    Why cant the answer be A?
  19. C

    Physics: Post your doubts here!

    But there's no force of friction. Can only the constant forward force itself be the resultant force in this case? Also, the constant force is used in the formula f=ma in the question and keeping in mind the force f=ma always gives the resultant, doesn't that mean the constant forward force of...
  20. C

    Physics: Post your doubts here!

    Need help understanding a concept in this. It's said the truck moves with constant force, doesnt that mean it moves with constant velocity as well and hence has 0 acceleration?
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