For a cube-shaped room, 10 ft on a side, what will be the rate of ...

[james]

For a cube-shaped room, 10 ft on a side, what will be the rate of heat loss if the R-value is 4 ft2-F hr/Btu for each side and the T is 50 F?
 a. 800 b. 1200 c. 5000 d. 7500 e. 12,000 Btu/hr

Question 2

A book is placed on a chair. Then a videocassette is placed on the book. The floor exerts a normal force
 a. on all three. b. only on the book.
  c. only on the chair.
  d. upwards on the chair and downwards on the book.
  e. only on the objects that you have defined to be part of the system.

[aloop]

Answer to Question 1

d

Answer to Question 2

C

[james]

Gracias!

[komodo7]

Excellent