They can be described as small in quantity and very dangerously radioactive.
The results may differ due to resistive forces that may be affecting the system by decelerating it or any other external forces that might accelerate it a bit.Or the timing could be a little inaccurate.
Answer:
2.83m
Explanation:
The information that we have is
Intensity at 2.0 m: and
we need an intensity level of:
thus, we are looking for the distance .
which we can find with the law for intensity and distance:
we solve for :
and we substitute the known values:
at a distance of 2.83m the intensity level is 40dB
When you ride a bicycle it means you are moving forward and the wheels of the bicycle are rotating anti- clockwise as viewed from the left side of the bike