What is the outside temperature if 4000 kcal of heat is lost ...

[casperchen82]

What is the outside temperature if 4000 kcal of heat is lost through a 4.0 m2 pane of 0.30 cm thick glass (k = 2.0  10-4 kcal/smC) in one hour from a house kept at 20C?
 
  A)
 
  0C
 
  B)
 
  4C
 
  C)
 
  16C
 
  D)
 
  18C
 
  E)
 
  24C

Question 2

A wave pulse on a string whose end is free is reflected without inversion.
 
  Indicate whether the statement is true or false

[mrphibs]

Answer to Question 1

C

Answer to Question 2

TRUE

[casperchen82]

Gracias!

[samiel-sayed]

Excellent