If the amplitude of a wave increases by a factor of 4, how is the intensity changed?
2 answers:
The intensity increases 16 times.
The relationship between intensity and amplitude is given below:
<span> I = constant
Since, A becomes 4 times, A' = 4A</span><span>
Thus the intensity becomes, I' = constant </span>× (<span>4A)</span>²<span>
</span>⇒<span> I' = 16A</span>²
Therefore, the intensity of the wave is increased by 16 times
The relationship between intensity and amplitude is given below:
<span> I = constant
Since, A becomes 4 times, A' = 4A</span><span>
Thus the intensity becomes, I' = constant </span>× (<span>4A)</span>²<span>
</span>⇒<span> I' = 16A</span>²
Therefore, the intensity of the wave is increased by 16 times
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The main reason why wheelchair ramps are used to move people up a staircase is because it has a high mechanical advantage which leads to a greater efficiency in moving people up the staircase.
- <em>Let the height of the staircase = h</em>
- <em>Let the length of the ramp = L</em>
The mechanical advantage of the ramp is calculated as follows;
As the length of the ramp increases, people will be move up to a greater distance up the staircase.
Thus, the main reason why wheelchair ramps are used to move people up a staircase is because it has a high mechanical advantage which leads to a greater efficiency in moving people up the staircase.
Learn more about mechanical advantages of ramps here: brainly.com/question/200179