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Two current carrying wires are arranged parallel to each other, separated by a short distance. Wire...

  1. Two current carrying wires are arranged parallel to each other, separated by a short distance. Wire A has a current of 1.0 A, and wire B has a current of 6.0 A. The magnitude of the magnetic force acting on wire A is _______ the magnitude of the force acting on wire B.

    A) greater than
    B) less than
    C) the same as
    D) not enough information
  2. An airplane engine emits a frequency of fs = 650 Hz. If the airplane is flying straight towards you, what best describes the sound you hear as it flies past you? A) The observed frequency starts higher than 650 Hz and ends lower than 650 Hz.B) The observed frequency starts at 650 Hz and ends higher than 650 Hz. C) The observed frequency starts at 650 Hz and ends lower than 650 Hz D) The observed frequency doesn't change.
  3. When audible sound and visible light pass through the same doorway, which diffracts more?
    A) sound
    B) light
    C) both about the same
    D) need more info
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