Answer:
The energy of a mechanical wave can travel only through matter. The matter through which the wave travels is called the medium (plural, media). The medium in the water wave pictured above is water, a liquid. But the medium of a mechanical wave can be any state of matter, even a solid.
Explanation:
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Answer:
75 miles an hour
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The angle of a resultant vector is given by the equation
Explanation:
When we compute the resultant vector starting from 2 (or more) vectord, we add the components along the x- and y- direction of the original vectors, in order to find the component of the resultant vector along the two directions.
Let's call:
the component of the resultant vector along the x-direction
the component of the resultant vector along the y-direction
The magnitude of the resultant vector is then given by Pythagorean's theorem:
While the angle can be found by taking the arctangent of the ratio between the y-component and the x-component, mathematically:
Note that this angle is measured between the resultant vector and the positive direction of the x-axis.
Learn more about vector components:
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