What is the intensity level in decibels of a sound with intensity ...

[Lisaclaire]

What is the intensity level in decibels of a sound with intensity 10-3 W/m2? The threshold of human hearing is 1.0  10-12 W/m2.
 
  A) 30 dB
  B) 60 dB
  C) 90 dB
  D) 96 dB

Question 2

Three resistors of 12 , 12 , and 6.0  are connected together, and an ideal 12-V battery is connected across the combination. What is the current through the battery if they are connected (a) in series or (b) in parallel?
 
  What will be an ideal response?

[Anton]

Answer to Question 1

C

Answer to Question 2

(a) 0.40 A (b) 4.0 A

[Lisaclaire]

Thanks

[Anton]

Welcome