The frequency of wave B is half the frequency of wave A
Explanation:
The wavelength, the speed and the frequency of a wave are related by the wave equation:
where
v is the speed of the wave
f is its frequency
is its wavelength
The equation can also be rewritten as
In this problem, we have wave A with wavelength and speed v, so its frequency is
Then we have wave B, whose wavelength is twice that of wave A:
And its speed is the same; Therefore, its frequency is
So, the frequency of wave B is half that of wave A.
Learn more about wavelength and frequency:
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When you push a door closed it doesn't travel in a straight line it turns around the hinges this is an example of a line
Answer:
Explanation:
As the pendulum is slightly shifted to the left then we have restoring torque on it given as
so here we have
here we know that
also for small angular displacement
now we have its moment of inertia about suspension point given as
now it is given as
so we have
so angular frequency is given as
If the object is at equalibirium, then the force is balanced. '<em>Balanced</em>' is the key word that is used to describe equilibrium situations. If the object has a zero net force, the acceleration is 0 m/s/s. Objects at equilibrium should have an acceleration of 0 m/s/s.