How many decibels correspond to a sound intensity of 7.0 10-7 ...

[bobypop]

How many decibels correspond to a sound intensity of 7.0  10-7 W/m2?
 
  A) 70
  B) 58
  C) 69
  D) 75
  E) 63

Question 2

What is the rate of heat flow through a pane of glass that is 40.0 cm by 30.0 cm with a thickness of 4.00 mm when the outside temperature is -10.0C and the inside temperature is 25.0C?
 
  The thermal conductivity of glass is 0.105 W/(mK) and the specific heat of glass is 0.180 cal/(gC).
  A) 24.2 W
  B) 3.81 W
  C) 18.6 W
  D) 47.3 W
  E) 110 W

[Ksh22]

Answer to Question 1

B

Answer to Question 2

E

[bobypop]

Gracias!

[meganmoser117]

Thanks for the timely response, appreciate it