Recent content by mcca408

  1. M

    Verifying Identity: Sec(x)Sin2(x) = 1 - cos(x)

    Sec(x)Sin2(x) ______________________ = 1 - cos(x) 1 + sec(x) ok using the identity sec(x)=1/cos(x) I get 1/cos(x) * sin2(x) __________________________ 1 + 1/cos(x) and that = sin2(x)/cos(x) ______________________ 1 + 1/cos(x) multiply top and bottom by cos(x)...
  2. M

    Verifying Identity: Sec(x)Sin2(x) = 1 - cos(x)

    Homework Statement verify the following identity: Sec(x)Sin2(x) ______________________ = 1 - cos(x) 1 + sec(x) Homework Equations sec(x)=1/cos(x) sin2(x)=1-cos2(x) The Attempt at a Solution I never know how to start off these problems. I have to take the...
  3. M

    How Can We Optimize Our Water Balloon Launcher?

    Thanks very helpful. We kept popping our balloon at launch. We had fast fast acceleration over short distance. Now we have loosened the tension and pulled back further the water balloon.
  4. M

    How Can We Optimize Our Water Balloon Launcher?

    It is a Project: I have constructed a waterballon launcher with a group. It looks similar to this, http://www.engr.trinity.edu/images/balloonlaunchers/3balloonlaunch2002.jpg We are to launch a waterballon an unknown distance between 10-50 meters. We need to determine horizontal range the...
  5. M

    Does it make since if it takes 675 food Calories to lift me up 17 ft?

    does it make since if it takes 675 food Calories to lift me up 17 ft look below *IGNORING HORIZONTAL DISTANCE* i got to figure out how much work is done to get myself up from my class to the cafeteria which is 17 ft in vertical hieght PE=mgh my weight is 120 lbs i converted to mass...
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