Question

Help me with the 4 of them i mark u as brainlist 20 points

Answer 1

1. X axis - type of sound; y axis - sound level (decibels)
2. whisper - 20 decibels; normal talking - 60 decibels; rock concert - 120 decibels
3. Normal talking is 40 decibels more intense. You can figure this out by subtracting the decibels of whispering from the decibels of normal talking (60-20)
4. The pain threshold is 120 decibels. This means the jet sounds could be painful because it is 140 decibels, or higher than the threshold.

Answer 2

Answer:

1 -

x axis - types of sound

y axis - sound levels(decibels)  

2 -

whisper - 20 decibels

normal - 60 decibels

rock concert - 120 decibels

3 -

40 decibels more intense because a whisper is 20 decibels and normal talking is 60 decibels. So you take the two & subtract them 60 - 20 = 40. So that means it is 20 decibels more intense.

4 -

Pain threshold & a Jet plane