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Ruchi.

  • 2 years ago

arush sat down to study at 8 a.m. the angle of elevation of the sun was 15'.when he finished studying the angle of elevation of the sun was 55'.how long did arush study?

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  1. Ruchi.
    • 2 years ago
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    @Hero @karatechopper

  2. Ruchi.
    • 2 years ago
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    plz hlp me out today is my xam PSA

  3. Ruchi.
    • 2 years ago
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    @sirm3d @onedirection822 @Weepdo-s @poopsiedoodle

  4. Ruchi.
    • 2 years ago
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    timo u r writing something were that

  5. timo86m
    • 2 years ago
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    |dw:1360980444964:dw|

  6. timo86m
    • 2 years ago
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    be nice poopsie how the heck you become ambassador?

  7. timo86m
    • 2 years ago
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    set a ratio original to new time 8/x=15/55

  8. timo86m
    • 2 years ago
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    that reduces to 8/x = 3/11

  9. timo86m
    • 2 years ago
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    or i think i did it wrong

  10. timo86m
    • 2 years ago
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    is there more info ruchi?

  11. Ruchi.
    • 2 years ago
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    yes option is also given 40 mins, 1hrs 20mins, 2hrs 23mins, 2hrs 40 mins

  12. timo86m
    • 2 years ago
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    |dw:1360981152161:dw|

  13. timo86m
    • 2 years ago
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    ruchi there should be a more info. other than choices.

  14. Ruchi.
    • 2 years ago
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    no

  15. timo86m
    • 2 years ago
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    i am confused perhabs if we divide the angle 360 into a 24 hour thingy. so 360 degree= 24 hour

  16. Ruchi.
    • 2 years ago
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    nt getting

  17. timo86m
    • 2 years ago
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    ooh maybe the horizontal length is fixed and just the vertical varies.

  18. timo86m
    • 2 years ago
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    |dw:1360981498364:dw|

  19. Ruchi.
    • 2 years ago
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    hw to solve nt getting

  20. richyw
    • 2 years ago
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    what latitude does he live in?

  21. Ruchi.
    • 2 years ago
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    u can read question 4 that?

  22. timo86m
    • 2 years ago
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    sorry i think we need more info.

  23. richyw
    • 2 years ago
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    if you assume that the sun travels in an arc directly overhead then you can get the angular velocity of the sun as\[\omega=\frac{180^{\circ}}{12 \text{ hours}}=15^{\circ}/\text{h}\]then \[\Delta t=\frac{\Delta\theta}{w}=\frac{55^{\circ}-15^{\circ}}{15^{\circ}/h}=\frac{8}{3}h=160\text{ min}\]

  24. richyw
    • 2 years ago
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    but here the sun is at 15 degrees at 8 am so the time zone are a bit messed up. I guess it is plausible as long as the area is right on the edge of a time zone, but you would expect the sun to rise and set around 6am and 6 pm.

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