Which of the following is an example of a chemical change?
2 answers:
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The period is the inverse of the frequence:
Answer:
The average angular acceleration is
Explanation:
From the question we are told that
From the question we are told that
The length of the bat is \
The initial linear velocity is
The time is
The velocity at t is
Generally average angular acceleration is mathematically represented as
Where is the finial angular velocity which is mathematically evaluated as
and is the initial angular velocity which is zero since initial linear velocity is zero
So
For a lens, the following sign convention is generally used:
- f (the focal length) is positive for a converging lens and negative for a diverging lens
-
(the distance of the object from the lens) is positive if the object is in front of the lens and negative if it is behind the lens
-
(distance of the image from the lens) is positive if the image is behind the lens (real image) and negative if the image is in front of the lens (virtual image)
Therefore, the correct option is
<span>A. +di
</span>which mens that the image is real and located behind the lens.
- f (the focal length) is positive for a converging lens and negative for a diverging lens
-
-
Therefore, the correct option is
<span>A. +di
</span>which mens that the image is real and located behind the lens.