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anonymous

  • 5 years ago

The weight W of an object varies inversely as the square of the distance d from the center of the earth. At sea level (3978 mi from the center of the earth), an astronaut weights 122 lb. Find her weight when she is 186 mi above the surface of the earth and the spacecraft is not in motion. Her weight is _ lb

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  1. amistre64
    • 5 years ago
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    so we are using 3978 as our earth center distance eh... some books use 4000

  2. amistre64
    • 5 years ago
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    inversely proportional means that as one gets more, the other gets less. and we solve it with a fraction: y = 1/x is an inverse proportion

  3. amistre64
    • 5 years ago
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    we also use a number "k" as a constant in the equation to even the two out, otherwise itsd just be nonesense

  4. anonymous
    • 5 years ago
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    ............this is deep

  5. amistre64
    • 5 years ago
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    W = k/(d^2) 122 = k/(3978)^2 k = 122((3978)^2) k = 19,305,870,48

  6. amistre64
    • 5 years ago
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    lol.... its in space, thats like the opposite of deep :)

  7. amistre64
    • 5 years ago
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    W = 19,305,870,48 // d^2 W = 19,305,870,48 // (3978+186)^2 W = 19,305,870,48 // 17,338,896 W = 111.344 lbs if I did it right

  8. anonymous
    • 5 years ago
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    .........

  9. anonymous
    • 5 years ago
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    YES!

  10. amistre64
    • 5 years ago
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    is that a right or a wrong lol if its the same program as the other girl that was here; try 111.34

  11. amistre64
    • 5 years ago
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    i take that for a correct lol

  12. anonymous
    • 5 years ago
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    Can you that one more time?

  13. anonymous
    • 5 years ago
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    My friend Kelley is on here.......and has the same question, just different numbers

  14. amistre64
    • 5 years ago
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    I dont know..... the rules change with every iteration of doing the math so it could get tricky.......... ;)

  15. anonymous
    • 5 years ago
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    Lol, she is pissed that you got it right for me

  16. amistre64
    • 5 years ago
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    hah!! its these big brains in this tiny little head lol

  17. anonymous
    • 5 years ago
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    Hey, it seems to work.........ok hers is.....

  18. anonymous
    • 5 years ago
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    her astronaut weights 130 lbs

  19. anonymous
    • 5 years ago
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    this stuff is nuts

  20. amistre64
    • 5 years ago
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    if I start throwing "pi" around like a clown, just shoot me!!

  21. anonymous
    • 5 years ago
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    lol ........wow....... math joke.

  22. amistre64
    • 5 years ago
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    is that the only difference in numbers? 130 lbs?

  23. anonymous
    • 5 years ago
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    One more thing her astronaut is 173 miles above the surface of the earth

  24. amistre64
    • 5 years ago
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    ok.... let me crunch some numbers, do the hokey pokey and turn myself about.....

  25. anonymous
    • 5 years ago
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    What is the hokey pokey really IS what it's all about?

  26. amistre64
    • 5 years ago
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    W = k/(d^2) 130 = k/(3978)^2 k = 130((3978)^2) k = 2,057,182,920 ------------------------- W = 2,057,182,920 // d^2 W = 2,057,182,920 // (3978+173)^2 W = 2,057,182,920 // 17,230,801 W = 119.38986 lbs so I would put in... 119.39 as an answer if not, then 119.38

  27. amistre64
    • 5 years ago
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    as a kid, it was either the hokey pokey are duck duck goose :)

  28. amistre64
    • 5 years ago
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    rock paper scissors hadnt been invented yet lol

  29. anonymous
    • 5 years ago
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    lol

  30. anonymous
    • 5 years ago
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    She says youre awesome!

  31. amistre64
    • 5 years ago
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    now now... she only says it cause its true :)

  32. amistre64
    • 5 years ago
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    or shes having a stroke....have her repeat the alphabet just to be sure ;)

  33. anonymous
    • 5 years ago
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    She couldnt do that anyways!

  34. anonymous
    • 5 years ago
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    We only have like two weeks left.........

  35. amistre64
    • 5 years ago
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    ......cancer?

  36. anonymous
    • 5 years ago
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    almost.........math class.

  37. anonymous
    • 5 years ago
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    I have one more............ o........wait......

  38. anonymous
    • 5 years ago
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    Well, thanks!

  39. amistre64
    • 5 years ago
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    type in a new post ;) that way more people can have a chance to help.... they are jealous of my fan count I just know it ;)

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