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CaHeK987 [17]
4 years ago
11

Need help with these please

Physics
2 answers:
Vilka [71]4 years ago
7 0

Answer: i hope it helps :)

  1. Frequency
  2. Amplitude
  3. Cycle
  4. Transverse wave

Explanation:  According to research :

  • Transverse wave occurs when :

Oscillations where particles are displaced perpendicular to the wave direction.

  • Amplitude :The amplitude of a periodic variable is a measure of its change in a single period
  • Cycle :a series of events that are regularly repeated in the same order.
  • Frequency :the rate per second of a vibration constituting a wave, either in a material (as in sound waves), or in an electromagnetic field (as in radio waves and light).
Montano1993 [528]4 years ago
6 0

Answer:

Explanation:

Which number all or one?

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If position vector r = bt^2i + ct^3j, where b and c are positive constants, when does the velocity vector make an angle of 450 w
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\vec r(t)=bt^2\,\vec\imath+ct^3\,\vec\jmath

The velocity at time t is

\dfrac{\mathrm d\vec r(t)}{\mathrm dt}=2bt\,\vec\imath+3ct^2\,\vec\jmath

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and

\dfrac{\mathrm d\vec r(t)}{\mathrm dt}\cdot\vec\jmath=3ct^2=\sqrt{4b^2t^2+9c^2t^4}\cos\theta

We want the angles between these vectors to be 45º, for which we have \cos45^\circ=\frac1{\sqrt2}. So

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