Recent content by J7

  1. J

    What is the number e and how is it related to logarithms?

    The Number "e" and Logarithms Hi, I'm having a lot of difficulty understanding the number "e" and logarithms, especially in terms of differentiating them. Is it just a matter of memorization or are there tricks to finding the derivatives? Help!
  2. J

    What does e represent in calculus and why is it used?

    Hi, can anyone explain "e" to me? It's used all the time in calc and I don't understand what it represents or it's value. Thanks
  3. J

    How Do You Calculate an Unknown Initial Force Using Newton's 2nd Law?

    If i am given information involving a particle and I know the resulting velocity (in x and y direction) and one of the beginning forces in Newtons (x and y components as well), how do i figure out the other beginning force? I'm given no information about angles or the mass of the object
  4. J

    Problems - Gravity & Mass of Earth & Moon

    I figured the first one out, thanks anyway, I'm going to try the second one once more on my own
  5. J

    What Is the Lunar Mass Compared to Earth's?

    I GOT IT! Thanks so much for all your help! On to the next question!
  6. J

    Problems - Gravity & Mass of Earth & Moon

    Many, but i have a feeling I'm using them incorrectly, and because I'm not exactly sure of what each thing in the formulas stands for, I can't substitute in for them.
  7. J

    What Is the Lunar Mass Compared to Earth's?

    I do know that equation.. what does the second m in the numerator stand for though??
  8. J

    Problems - Gravity & Mass of Earth & Moon

    I'm completely stumped on 2 questions I have, I'm not even sure which formula's to use, I've tried many... any help?? 1) Lunar gravity at the Moon's surface is only 1/6 as strong as what we experience on Earth. Since the diameter of the Moon is about 1/4 that of the Earth, the lunar mass is...
  9. J

    What Is the Lunar Mass Compared to Earth's?

    I have a problem that I've been working on FOREVER but can't figure out how to do. Lunar Gravity at the Moon's surface is only 1/6 as strong as what we experience on Earth. Since the diameter of the Moon is about 1/4 as large as the Earth's, the lunar mass is about : a) 3 X 10^-3 times the...
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