Solution :
Let, intensity at distance 3 m from the acoustic source is 
.
We need to find the distance d where the intensity is 
.
Now, we know intensity is inversely proportional to square of distance between the source.
Therefore, intensity will be halved at a distance of 
.
Answer:
cellular respiration is a critical function by which cells release energy for various cellular activities like locomotion, biosynthesis, and even the transportation of molecules between membranes.
Answer:
provide rewards to use solar power
Explanation:
Using solar power we can avoid bad energy like Coal, oil, natural gas, uranium and water from a dam.
All these kinds of energy producing air pollution, water pollution, or greenhouse gases.
But solar power has some toxic materials, also, using a lot of water to keep and clean solar power. In addition, if we create a solar power near a river or lake may cause damage.
We must think in these factors before to do a solar power.
A theory is a well-tested explanation <span>that uses a broad range of observations.</span> A hypotheses is an explanation for something, but the information is taken from observation, but has not been proved. Most hypotheses can be proven or disproven by further research.
Answer:
So I don't know what do you mean by that, please be a little specific.
Explanation:
^^
