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MTALHAHASSAN2

  • one year ago

Need help!! 1. Determine the angular velocity of the hour hand of a clock in radians per second. (two significant figures please).

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  1. MTALHAHASSAN2
    • one year ago
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    @Mertsj

  2. Mertsj
    • one year ago
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    \[\frac{2\pi}{12 hr}\times \frac{1 hr}{3600 \sec}=1.5 radians/\sec\]

  3. MTALHAHASSAN2
    • one year ago
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    @Mertsj can you plz explain me how you get that values plz

  4. Mertsj
    • one year ago
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    Let me check. Maybe I hit a wrong button.

  5. MTALHAHASSAN2
    • one year ago
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    ok

  6. Mertsj
    • one year ago
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    Whoops. 1.5 x10^-4

  7. MTALHAHASSAN2
    • one year ago
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    oh ok but can you plz explain how you get 2pie/ 12 hrs and etc.

  8. MTALHAHASSAN2
    • one year ago
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    I am confuse

  9. Mertsj
    • one year ago
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    If the hour hand is on 1 where will it be in 12 hours?

  10. MTALHAHASSAN2
    • one year ago
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    on 1 again

  11. MTALHAHASSAN2
    • one year ago
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    because 12+1 is 13

  12. Mertsj
    • one year ago
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    Yes. It will have moved all the way around the circle (2pi radians) back to its starting point in 12 hours.The rest is just unit conversion.

  13. MTALHAHASSAN2
    • one year ago
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    ok but I still don't get 3600 how you get that

  14. Mertsj
    • one year ago
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    How many seconds are in 1 hour where you live?

  15. MTALHAHASSAN2
    • one year ago
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    60 sec

  16. Mertsj
    • one year ago
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    In America there are 60 seconds in 1 minute

  17. MTALHAHASSAN2
    • one year ago
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    so it be in 1 hour there is like 60min and 1 min is 60 sec. So it be 60X60 which is 3600

  18. MTALHAHASSAN2
    • one year ago
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    right?

  19. Mertsj
    • one year ago
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    Bingo!!! Good for you!!!

  20. MTALHAHASSAN2
    • one year ago
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    thanks

  21. Mertsj
    • one year ago
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    yw

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