Which observation could lead to the conclusion that an object is non-living?
2 answers:
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Answer:
(c) 97 dB sound intensity level
Explanation:
We have given the intensity of the loud car horn
We know that
Now the sound intensity level is given by , which is nearly equal to 97
So the sound intensity level will be 97 dB
So option (c) will be the correct option
The work is path independent since we have a conservative force.
Thus
Answer (1)
Thus
Answer (1)
The energy of a photon is given by
where
is the Planck constant
f is the frequency of the photon
In our problem, the frequency of the light is
therefore we can use the previous equation to calculate the energy of each photon of the green light emitted by the lamp:
where
f is the frequency of the photon
In our problem, the frequency of the light is
therefore we can use the previous equation to calculate the energy of each photon of the green light emitted by the lamp: