Recent content by JohnnyB212

  1. J

    An organ pipe is 84 cm long and at a temperature of 20 degrees C.

    OH! I got it! Since there was 1 node and 1 antinode, I assumed it canceled out, I simply put in 344 / (4 * .84) And it was correct lol, Thanks for your help! I appreciate this!
  2. J

    An organ pipe is 84 cm long and at a temperature of 20 degrees C.

    lol Gosh I'm sorry, I'm still confused, Iv'e been working on this stuff all day preparing for my physics final tomorrow, and I'm extremely confused. does the equation Fn = n * (v / 4L) have anything to do with it?
  3. J

    An organ pipe is 84 cm long and at a temperature of 20 degrees C.

    The picture alone doesn't really help me much though. :confused:
  4. J

    An organ pipe is 84 cm long and at a temperature of 20 degrees C.

    Homework Statement An organ pipe is 84 cm long and at a temperature of 20 degrees C. What is the fundamental (in Hertz) if the pipe is closed at one end? Homework Equations To best honest, I'm not really to sure where to start. Can anyone please help? Start me off? Thanks in advance!
  5. J

    The term mutual velocity, can be described as?

    Oh! I caught myself on the V1f, which is actually .5897 Still, confused about the mutual portion. How are you to determine the common similarities of two completely different numbers?
  6. J

    The term mutual velocity, can be described as?

    The term "mutual" velocity, can be described as? Homework Statement A 110 kg tackler moving at 3.0 m/s meets head-on (and tackles) a 95 kg halfback moving at 7.5 m/s. What will be their mutual velocity in meters/second immediately after the collision?Homework Equations m1 = 110kg V01 = 3.0...
  7. J

    What is the Orbital Speed of a Satellite at 7000 km Altitude?

    Homework Statement A satellite is in circular orbit above the Earth at an altitude of 7000 km. What is the orbital speed of the satellite?Homework Equations Well, knowing that the mass of Earth of 5.98 X 10^24 kg And the radius of Earth is 6.38 x 10^6 m What equation do I start with here...
  8. J

    Coefficient of friction question.

    Yep, I just caught this! My mistake. :frown:
  9. J

    Coefficient of friction question.

    Cancel that, Stupid me plugged in the wrong radius into the equation, my mistake! Sorry!
  10. J

    Coefficient of friction question.

    Homework Statement On a wet racetrack, the maximum safe speed, to avoid sliding on a level circular curve with a radius of curvature of 53 m, is 77 km/hr. What is the coefficient of friction between the car's tires and the track surface? Homework Equations (gravity)*(coefficient) =...
  11. J

    Newtons applied to a constant velocity

    Homework Statement A 1.0 kg object, moving with a constant velocity of 2.0 m/s, is acted upon by a force of 15 N in the direction of the motion for 6.0 s. What is the velocity (in meters/second) of the object at the end of this time? Homework Equations I was thinking of using, V = Vo...
  12. J

    Calculating Average Force: 0.110 kg Baseball Strikes Catcher's Mitt

    THANK YOU! I knew this was easier than I expected. I'm a newbie here but expect more from me, Physics is one of those classes that keeps me up at night :cry:
  13. J

    Calculating Average Force: 0.110 kg Baseball Strikes Catcher's Mitt

    Have a difficult time on where to start here, iv'e looked over the book, and my notes, and I believe the question is more basic than given, Am I thinking too in depth here? Help please! A 0.110 kg baseball, traveling 34.0 m/s, strikes the catcher's mitt, which recoils 14.0 cm in...
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