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kym02

find the force of a bacteria of velocity 20nmμs-1 in the bloodstream of a patient along a vein of length 1mm, if the mass of the bacteria is o.o1μg.

  • one year ago
  • one year ago

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  1. KonradZuse
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    Force is in N, do you know the formula?

    • one year ago
  2. kym02
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    F=ma, that's all i know

    • one year ago
  3. KonradZuse
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    what exactly is velocity 20nmμs-1 ???

    • one year ago
  4. KonradZuse
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    @TuringTest

    • one year ago
  5. kym02
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    its the rate at which the bacteria is travelling 20 newton metres, and the μ is the symbol for mu,,,,,i'm not really familiar with these units

    • one year ago
  6. kym02
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    hello?????!!!!!!!!!!!!

    • one year ago
  7. ghazi
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    \[V= \frac{ 20 * 10^ {-9}}{ 10^{-6} }=20*10^{-3} m/s\] and length = 0.001 m now firstly, find the acceleration using the relation \[U^2=2*a*D\] where D is distance \[a=\frac{ U^2 }{ 2D }=(20*10^{-3})/2*10^{-3}=10 m/s^2\] now force F=mass * acceleration\[F= 10^{-8}* 10= 10^{-7} N\] = 10^(-7) N hope this helps you and remember every power is negative :D

    • one year ago
  8. kym02
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    thank you sooooo much!!!!!!!!!!!!11

    • one year ago
  9. ghazi
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    :D YW

    • one year ago
  10. kym02
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    what's the correct way of writing 10^(-7) N?

    • one year ago
  11. ghazi
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    |dw:1359595444224:dw|

    • one year ago
  12. kym02
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    oh ok and one more thing is that a multiplication sign?

    • one year ago
  13. ghazi
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    NO, that is power of 10 or exponent of 10

    • one year ago
  14. kym02
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    i meant this

    • one year ago
  15. ghazi
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    i dont know what you meant

    • one year ago
  16. kym02
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    sorry i tried to draw i meant the sign between the 20 and 10(-7) at the first part where you calculated velocity

    • one year ago
  17. ghazi
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    thats multiplication hope you have seen it for multiplication thing

    • one year ago
  18. kym02
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    oh ok thanks for you help! my teacher is a hand full he's so unfair!

    • one year ago
  19. ghazi
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    its okay :)

    • one year ago
  20. kym02
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    ok take care bye! i now know who to come for when i need help

    • one year ago
  21. ghazi
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    see ya :)

    • one year ago
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