Recent content by mantito

  1. M

    Bone CompressionTension problem

    force magnitude, initial length and cross sectional area are the same both times. differs only Y and delta L.
  2. M

    Solving Factorial Notation Questions: An Explanation

    well, the key to solution is to notice that n!=(n-2)!*(n-1)*n and (n+1)!=n!*(n+1). also (n!)^2=n!*n!.
  3. M

    Understanding the Doppler Equation: Effects of Moving Sources and Detectors

    if both source and dectector are moving in the same direction at the same speed, is there a relative speed between them? then, does it matter what the sign is?
  4. M

    How to write this logarithmic equation as a power

    sorry, i forgot this one:) 3)a^(b*c)=(a^b)^c
  5. M

    How to write this logarithmic equation as a power

    1)lny=3+0.2x => y=exp(3+0.2x). Now you do the 2).
  6. M

    How to write this logarithmic equation as a power

    1) ln(a)=x means a=exp(x) 2) exp(x+y)=exp(x)*exp(y)
  7. M

    Confirm Calculation of Bullet Velocity to Hit Skeet

    answer is smaller
  8. M

    Two objects travelling on a parallel plane

    you don't need to know t. You know At and that's enough (v=v0+At)
  9. M

    Loci Conics Parabola eqn in standard form

    you know points (50,0) and (-50,0). solve equation x^2=4p (y-20) again.
  10. M

    How to Solve a Tricky Differential Equation: A Textbook Example

    you forgot \frac{1}{2} in front of e^\frac{t}{3}. The answer should be y=\frac{3}{5}e^\frac{t}{3}+Ce^-\frac{t}{2}
  11. M

    Finding mag E of 2 thin-walled concentric cylindrical shells

    if shells are conductors i get E=2.25\cdot10^6 at r=4 cm too.
  12. M

    Why Is My Line Integral Calculation Incorrect?

    i don't know why, but i see your function as some chinese characters, can you retype it in some other way:).
  13. M

    Cant seem to get the answer right (E&M HW)

    i don't understand how you get your formula. i get E=(-95*10^-6)/2*pi*R*ε0, as in formula in the image you gave link to.
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