Answer:
6.02dB
Explanation:
The sound level intensity can be calculated by using the formula:
where Io is the threshold of human hearing, and I is the intensity of the sound in at a certain distance. I is given by
where P is the power of the source and r is the distance to the source. By replacing I in the expression for I(dB) we obtain
when jim halves the distance we have r'=1/2r:
Hence, the change o decibels is:
hope this helps!!
Answer:
An intermediate swimmer would probably take about four to five minutes, while a trained swimmer could take less than three. The world record is 1:42:00, held by Paul Biedermann. If you are a good swimmer you would swim it easily in 3 and a half minutes.
Explanation:
There are no "following" to choose from.
The current in the circuit will decrease if you make the battery voltage less than 1.5v, or make the wire in the loop longer, or open the switch.
Answer:
<h2>
<em>True</em></h2>
Forests helps in binding the soil together. Thus, prevent soil from erosion.
