Recent content by Zacthor

  1. Z

    How do I calculate the necessary pump pressure for a 11.5 m fountain?

    A fountain designed to spray a column of water 11.5 m into the air has a 1.34-cm-diameter nozzle at ground level. The water pump is 2.75 m below the ground. The pipe to the nozzle has a diameter of 2.68 cm. Find the pump pressure necessary if the fountain is to operate as designed. (Assume...
  2. Z

    Throw a ball up how high does it go

    An object is projected straight upward from the surface of Earth with an initial speed of 2.98 km/s. What is the maximum height it reaches? Ok i know this seams like a really easy problem but i can't figure it out... since this question is from our chapter on gravity i have trued usuing is...
  3. Z

    Rotational Energy and Moment of Inertia of a nitrogen molecule

    Problem 10-58a: The equilibrium separation between the nuclei of the nitrogen molecule (N2) is 0.190 nm and the mass of each nitrogen nucleus is 14.0 u, where u = 1.66E-27 kg. For rotational energies, the total energy is due to rotational kinetic energy. Approximate the nitrogen molecule as a...