200 g of ice at 0C is dropped into a calorimeter of negligible ...

[burchfield96]

200 g of ice at 0C is dropped into a calorimeter of negligible heat capacity containing 350 g of water at 20C. What is the temperature of the system when it reaches equilibrium? The latent heat of fusion of water is 80 cal/g.
 
  A)
 
  0C
 
  B)
 
  24C
 
  C)
 
  -13C
 
  D)
 
  13C
 
  E)
 
  -24C

Question 2

A torsion pendulum consists of a uniform rod hanging horizontally from thin wire tied to its center.
 
  When the wire is twisted through an angle , the wire exerts a torque  = -, where  = 0.0016 Nm/rad. The rod has a mass of 35 grams and is 10 cm long. What is the period of the torsional oscillations of the pendulum?
  A)
 
  0.85 s
 
  B)
 
  1.4 s
 
  C)
 
  0.99 s
 
  D)
 
  2.1 s
 
  E)
 
  0.023 s

[stanleka1]

Answer to Question 1

A

Answer to Question 2

A