A 0.600-kg piece of metal X is heated to 100C and placed in an ...

[Mimi]

A 0.600-kg piece of metal X is heated to 100C and placed in an aluminum can of mass 0.200-kg which contains 0.500 kg of water initially at 17.3C. The final equilibrium temperature of the mixture is 20.2C,
 
  what is the specific heat of metal X? The specific heats of water and aluminum are 4186 J/kg  K (water) and 910 J/kg  K (aluminum).
  A) 140 J/kg  K
  B) 270 J/kg  K
  C) 450 J/kg  K
  D) 900 J/kg  K

Question 2

A wrench is placed at 30 cm in front of a concave lens with a focal length of magnitude 10 cm. What is the magnification of the wrench?
 
  A) 0.25
  B) -0.25
  C) 0.67
  D) -0.67
  E) 4.0

[sarajane1989]

Answer to Question 1

A

Answer to Question 2

A

[Mimi]

TYSM

[cassie_ragen]

Excellent