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kym02

  • 3 years ago

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.

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  1. KonradZuse
    • 3 years ago
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    Force is in N, do you know the formula?

  2. kym02
    • 3 years ago
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    F=ma, that's all i know

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

  4. KonradZuse
    • 3 years ago
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    @TuringTest

  5. kym02
    • 3 years ago
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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

  6. kym02
    • 3 years ago
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    hello?????!!!!!!!!!!!!

  7. ghazi
    • 3 years ago
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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

  8. kym02
    • 3 years ago
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    thank you sooooo much!!!!!!!!!!!!11

  9. ghazi
    • 3 years ago
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    :D YW

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

  11. ghazi
    • 3 years ago
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    |dw:1359595444224:dw|

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

  13. ghazi
    • 3 years ago
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    NO, that is power of 10 or exponent of 10

  14. kym02
    • 3 years ago
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    i meant this

  15. ghazi
    • 3 years ago
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    i dont know what you meant

  16. kym02
    • 3 years ago
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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

  17. ghazi
    • 3 years ago
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    thats multiplication hope you have seen it for multiplication thing

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

  19. ghazi
    • 3 years ago
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    its okay :)

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

  21. ghazi
    • 3 years ago
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    see ya :)

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