Represent 8953 ms with Sl units having an appropriate prefix Express your answer to four significant figures and include the app
1 answer:
Answer:
8.953 s
Explanation:
Here a time of 8953 ms is given.
Some of the prefixes of the SI units are
mili = 10⁻³
micro = 10⁻⁶
nano = 10⁻⁹
kilo = 10³
Mega = 10⁶
Each prefix increases or decreases by a factor of 10³
The number is 8953.0
Here, the only solution where the number of significant figures is mili. If any other prefix is chosen then the significant figures will increase.
So, 8953 ms = 8.953 s
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Answer:
The fraction fraction of the final energy is stored in an initially uncharged capacitor after it has been charging for 3.0 time constants is
Explanation:
From the question we are told that
The time constant
The potential across the capacitor can be mathematically represented as
Where is the voltage of the capacitor when it is fully charged
So at
Generally energy stored in a capacitor is mathematically represented as
In this equation the energy stored is directly proportional to the the square of the potential across the capacitor
Now since capacitance is constant at
The energy stored can be evaluated at as
Hence the fraction of the energy stored in an initially uncharged capacitor is