A system consists of two thermal reservoirs in contact with each ...

[karateprodigy]

A system consists of two thermal reservoirs in contact with each other, one at temperature 300C and the other at temperature 200C. 600 J of heat transfers from the 300C reservoir to the 200C reservoir.
 
  What is the change in entropy of this system? A)
 
  0.221 J/K
 
  B)
 
  1.00 J/K
 
  C)
 
  5.00 J/K
 
  D)
 
  -1.00 J/K
 
  E)
 
  2.31 J/K

Question 2

A 4.0-cm-tall object is placed 50.0 cm from a diverging lens of focal length 25.0 cm. What is the nature and location of the image?
 
  A)
 
  A real image, 4.0 cm tall, 20 cm other side of the object
  B)
 
  A virtual image, 4.0 cm tall, 20 cm other side of the object
  C)
 
  A virtual image, 2.0 cm tall, 10 cm other side of the object
  D)
 
  A virtual image, 1.3 cm tall, 16.7 cm same side as the object
  E)
 
  A real image, 1.3 cm tall, 16.7 cm same side as the object

[spencer.martell]

Answer to Question 1

A

Answer to Question 2

D

[karateprodigy]

Excellent

[meganmoser117]

Gracias!