Answer:
60
Explanation:
Every 60 minutes is an hour
Hi alexander it is very true air pollution is only caused by human activity
B) <span>Scientific study of matter and how materials interact with each other at the atomic level
b/c chem has to do with atoms
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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.