Question

Which decibel level is 100 times higher than the lowest pressure humans can hear?

5 dB
10 dB
20 dB
40 dB

Answer 1

D?

Answer 2

20log(100) , i used to solve it

Answer 3

wait, i may be wrong:/

Answer 4

I believe you are correct

Answer 5

here is a question i solved and got correct, and now its kind of confusing me.

You hear sounds at the following decibel levels: 5 dB, 10 dB, 20 dB, and 40 dB. Which sound is 10 times higher than the lowest pressure humans can hear?

40 dB

10 dB

20 dB

5 dB

the answer was 20.

Answer 6

i was using it to help me to solve the one i posted

Answer 7

Yes 20 is correct

20log(10) = 20

Answer 8

ohhhh okay, and then if you switch that with 100 it would then be 40, okay got it

Answer 9

Similarly in the one you posted,

20log(intensity) = 20log(100) = 40 dB so you were correct there in my opinion