Josh and jake are both helping to build a brick wall which is 6 meters in height. They each lay 250 bricks, but josh finishes th
1 answer:
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Answer:
The sound level will be 1.870 dB louder.
Explanation:
Given that,
Power = 130 W
Power = 200 W
We need to calculate the sound level
Using formula of sound level
For one amplifier,
...(I)
For other amplifier,
...(II)
For difference in dB levels
Hence, The sound level will be 1.870 dB louder.
Answer:
Explanation:
At the beginning, we have:
V = 4.0 V potential difference across the capacitor
charge stored on the capacitor
Therefore, we can calculate the capacitance of the capacitor:
Later, the battery is replaced with another battery whose voltage is
V = 5.0 V
Since the capacitance of the capacitor does not change, we can calculate the new charge stored:
Since the capacitor has been connected exactly as before, we have that the charge on the positive plate has increased from to
. Therefore, the additional charge that moved to the positive plate is