Question

One machine produces a noise with a sound intensity level of 70 dB. If 2 of these machines are running at the same time, what is the total decibel level?

O 140 dB
O 67 dB
O 73 dB
O 70 dB
O 76 dB

Answer 1

The total decibel level produced by two machines running at the same time can be found by adding their decibel levels using logarithmic addition. Hence, the correct answer is 140 dB.

Step-by-step explanation:

To find the total decibel level produced by two machines running at the same time, you need to understand how sound intensity levels combine. The sound intensity level is measured on a logarithmic scale called decibels (dB). When two machines produce sound simultaneously, the total decibel level is calculated by adding the decibel levels of each machine together using logarithmic addition.

In this case, one machine produces a noise with a sound intensity level of 70 dB. Since there are two machines running, the total decibel level is obtained by adding 70 dB and 70 dB, which equals 140 dB.

Therefore, the correct answer is 140 dB.