Recent content by Littlemin5

  1. L

    Is a series is convergent or divergent

    sorry I meant: \sum_{n=1}^{\infty}\frac{7}{9 + n^5}
  2. L

    Is a series is convergent or divergent

    Homework Statement Determine the convergence or divergence of the series. If the series is convergent, find its sum. Justify each answer. (n=1, to infinity) \sum(7/9 + n^5) Help please? I missed a lot of school recently from being sick and need help with this!
  3. L

    The Earth and the Moon

    Homework Statement Supppose that electrical attraction, rather than gravity were responsible for holding the moon in orbit around the earth. If equal and opposite charges Q were placed on the earth and the Moon, What should be the value of Q to maintain the present orbit? Treat the Earth...
  4. L

    Formula for acceleration?

    Does anyone remember the formula used for finding the acceleration of two bodies towards each other, such as the sun towards the earth?
  5. L

    Conservation of Momentum Problem- Bullet

    Sorry but I'm still a bit confused. I know that Newton's Second Law is F=ma, but how can you find the normal for of the combo. Could you explain this a bit further?
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    Conservation of Momentum Problem- Bullet

    Homework Statement A 15g bullet strikes and becomes embedded in a 1.10kg block of wood placed on a horizontal surface just in front of the gun. If the coefficient of kinetic friction between the block and the surface is .25, and the impact drives the block a distance of 9.5m before it comes...
  7. L

    Minimum Work needed?

    Wait I don't really understand the last comment you made. Could you please explain it in a bit more detail?
  8. L

    Minimum Work needed?

    so frictional force is 2336.565 and then I add that to 9800 which equals 12136.565. From there I would do (12136.565)(300)(sin17.5) Right? And the answer I get would be my answer?
  9. L

    Minimum Work needed?

    Wouldn't you do 9800Cos17.5=9346.26N so your answer there would be the Normal Force?
  10. L

    Minimum Work needed?

    But I do have one more question if I was told that in the next part there was an effective coefficent of friction of .25 , wuld I just multiple my answer for Part 1 by .25?
  11. L

    Minimum Work needed?

    Oh, so you would have to use sin instead of cos. That makes more sense. I didnt know that you could interchange the trig function in the equation. Thanks so much for your help!
  12. L

    Minimum Work needed?

    Homework Statement what is the minimum wirk neede to push a 1000kg car 300m up a 17.5o incline? Part a. Ignore friction Homework Equations So we are allowed to use the general equation W=FdCos \theta The Attempt at a Solution So I thought you would just do: W=...
  13. L

    How to get the distance from the Sun when the net gravitational force exerted by the

    When you explain it like that then my answer makes more sense. Thanks so much though for clearing that all up!
  14. L

    Distance from sun to earth= 1.5 x10^11m

    Please help!!! 1. Homework Statement Find the point between Earth and the Sun at which an object an be placed so that the net gravitatinal force exerted by Earth an the sun on this object is zero. Me=5.98 x 10^24kg Ms=2 x 10^30kg Distance from sun to earth= 1.5 x10^11m 2. Homework...
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    How to get the distance from the Sun when the net gravitational force exerted by the

    Homework Statement Find the point between Earth and the Sun at which an object an be placed so that the net gravitatinal force exerted by Earth an the sun on this object is zero. Me=5.98 x 10^24kg Ms=2 x 10^30kg Distance from sun to earth= 1.5 x10^11m Homework Equations F=Gm1m2/r^2...
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