In the experiment, a meter is hooked up to a speaker to monitor the amplitude of the received sound. Suppose the background sign
1 answer:
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- Frequency =v=3.6×10^15Hz
We know
Answer:
<em>θ = 122°</em>
Explanation:
<u>Components of a Vector</u>
A vector in the plane can be defined by its rectangular components:
Or also can be given by its polar components:
Where r is the magnitude of the vector and θ is the angle it forms with the positive direction of x.
The relation between them is:
It's given the x-component of vector A is x=-25 m and the y-component is y=40 m
(a)
The magnitude of the vector is:
(b)
The calculator gives us the value
θ = -58°
But the real angle lies on the second quadrant since x is negative and y is positive, thus:
θ = -58° + 180° = 122°
θ = 122°