Physics 011
Quiz#14
Chapter 14 

Practice Problems 
1 
A 0.5 kg mass of Aluminum at 0 degrees Celsius is put in 1
kg of water at degrees
Celsius in a Calorimeter of negligible mass. What is the resulting
temperature (to the nearest tenth of a Celsius degree) at equilibrium? 


2 
You are in a 2 cm thick down sleeping bag. Assuming your
body temperature is 100 degrees Fahrenheit and the outside temperature is degrees
Fahrenheit, how much heat, to the nearest Joule, do you lose through the bag
in an hour? (Assume that the exposed area of the bag is 2 m^2.) 


3 
How much energy, to the nearest kcal, must be used to turn
kg of ice (c=0.5
kcal/kg*C) at 50 degrees Celsius into steam (c=.5 kcal/kg*C) at 150 degrees
Celsius? 


4 
A wall is made up of 5 cm of wood and 8 cm of brick. If
the temperature difference across the wall is Celsius
degrees,and the wall area is 10 m^2, how much heat, to the nearest Joule, is
lost through the wall in 1 hour? 


5 
If the interior wood wall in problem 4) is 30 C, what is
the temperature, to the nearest degree Celsius, of the wood/brick interface? 


6 
What is the internal energy of one mol of a monatomic
ideal gas at Celsius (to the
nearest Joule)? 


7 
If heat is added to the gas in problem 6) until its
internal energy is doubled, what will be its new temperature to the nearest
Celsius degree? 


8 
Assuming you have a body surface area of 2 m^2
,temperature of 37 C, an emissivity of 1, and are surrounded by walls at a
temperature of C,how much
energy ,to the nearest Joule, do you lose in an hour by radiation exchange? 

