Answer:
26dB
Explanation:
The decibel level β is a calculated by 10log (I/Io)
Where I and Io represent sound intensity
From the question, there's no interference. So
Where I = 4Io (because there are 4 men shouting), so the intensity will be 4 times larger.
β = 10log (I/Io)
β = 10log (4Io/Io)
β = 10log 4
β = 6.020599913279623
β = 6 ---- Approximated
The decibel level = 20 + 6.020599913279623
Decibel Level = 26.020599913279623
Decibel level =26dB --- Approximated
<span>The answer is B. run on a treadmill, which increases speed. The maximum oxygen intake is measured during incremental exercise, such is a run on a treadmill. It represents a physical fitness of an individual and shows their undurance capacity during prolonged physical activity. It is expressed as VO2max (maximum volume of O2) which unit is liter of O2 per minute (L/min)</span>
The answer is 4 because he is only asking about a helmet, the helmet has nothing to do with a strategy. The helmet involves protection not a strategy.
Hope this helps : )***
Make friends in after-school sports or clubs.
This will help you engage in activities you like as well as be in a supportive environment of like-minded people, which can reduce susceptibility to peer pressure.
