Search results

  1. H

    How do I determine which chemical is in which bottle

    I have two bottles of chemicals. I know that one bottle is Copper (II) Sulfide, and the other is Copper (II) Sulfate Pentahydrate. One bottle contains blue crystals and the other bottle contains black crystals. Problem is, the bottles aren't labeled, so the question is how do I determine...
  2. H

    Orbiting Satellite.

    I was hoping someone could check my work for me. Question: A satellite is in circular orbit 600 km above the Earth's surface, where the free-fall acceleration is 8.21 m/s^2. Take the radius of the earth as 6400 km. Determine the speed of the satellite and the time required to complete one...
  3. H

    How does a computer calculate acceleration and velocity?

    I am doing another lab report on motion. For this lab we used a motion detector connected to a computer to collect and display data about an object in motion. The question that I am having trouble with is how does the computer calculate velocity and acceleration based on the position data...
  4. H

    Simple question about velocity and acceleration

    I'm writing a lab report and came to the following conclusion, I was hoping someone might be able to verify it for me. The average velocity during the time interval [A,B] will be equal to the instantaneous velocity at the time (A+B)/2 if the acceleration during the time interval [A,B] is a...
  5. H

    Finding an antiderivative using substitution rule

    I'm trying to find the antiderivative of [sec(2x)tan(2x)], I can't figure out what part I should be substituting. Any help is appreciated. Thanks, hk
  6. H

    Derivatives of an odd function

    I've come to a few assumtions that my text hasn't covered yet, and I was hoping someone could confirm these for me or let me know where I might be missing something. Assuming f is an odd function and a > 0 and b > 0 and a < b: If f'(x) > 0 on (a,b), then f'(x) < 0 on (-b,-a). If f''(x)...
  7. H

    Trigonometric differentiation

    When y=sin(pi*x), why does y'=cos(pi*x)*pi, not y'=cos(pi*x)? hk
  8. H

    Simplifying a function

    According to my text 7(x^3+4x)^6(3x^2+4) simplifies to: 7x^6(x^2+4)^6(3x^2+4) But it seems to me it should simplify to: 7x(x^2+4)^6(3x^2+4) What am I missing here? hk
  9. H

    Help with Calc problem, limits

    This shouldn't be too hard but I'm stuck, brain is getting fried. lim [(1+2x-x^3)-(1+2(1)-(1)^3)]/(x-1) x->1 have gotten this far and I'm stuck: lim (-x^3+2x-1)/(x-1) x->1 Any help is appreciated, thx. hk ETA: fixed typo