Chapter 11 Heat Problems
Problem # 11.11
|
Problem
# 11.11 The low temperature reservoir of a
Carnot engine is at 7o C and has efficiency 40%. It is desired to
increase the efficiency to 50%. By how much degrees the temperature of hot
reservoir be increased. |
Chapter 11 Heat Problems
Problem # 11.10
|
Problem
# 11.10 A heat engine operates between two
reservoir at temperature of 25o C and 300o C. What is
the maximum efficiency for this engine. |
Chapter 11 Heat Problems
Problem # 11.9
|
Problem
# 11.9 A heat engine
performs 200 J of work in each cycle and has efficiency of 20 percent. For
each cycle of operation. (a) How much heat
is absorbed? (b) How much heat
is expelled? |
Chapter 11 Heat Problems
Problem # 11.8
|
Problem
# 11.8 There is a
increase of internal energy by 400 joules when 800 joules of work is done by
a system. What is the amount of heat supplied during this process. |
Chapter 11 Heat Problems
Problem # 11.7
|
Problem
# 11.7 In a certain process 400J of heat
are supplied to a system and at temperature
at same time 150J of work are done by the system. What is increase in
the internal energy of the system. |
Chapter 11 Heat Problems
Problem # 11.6
|
Problem
# 11.6 A 2kg iron block is taken from furnace where its
temperature 650o C and placed on a large block of ice is at 0o
C. Assuming that all the heat given up by the iron is used to melt the ice,
how much ice is melted. |
Chapter 11 Heat Problems
Problem # 11.5
|
Problem
# 11.5 (a) Determine the average value of Kinetic energy of particles of an ideal gas at 0o C and 50o C. (b) What is the kinetic energy per mole of an ideal gas at these temperature. |
Chapter 11 Heat Problems
Problem # 11.4
|
Problem
# 11.4 Calculate the root mean square speed of hydrogen molecule at 800 K. |
Chapter 11 Heat Problems
Problem # 11.3
|
Problem # 11.3 Find the change in volume of an
aluminum sphere of 0.4 m radius when it is heated from 0 to 100o
C. |
Chapter 11 Heat Problems
Problem # 11.2
|
Problem # 11.2 A long jumper leaves the ground at an angle of 20o C to the horizontal and at a speed of 11 m/s . (a)
How far does he jump? (b)
What is the maximum height reached? Assume the motion of the long jumper
is that of projectile. |
Chapter 11 Heat Problems
Problem 11.1
|
A
rescue helicopter drops a package of emergency ration to a standard party on
the ground. If the helicopter is travelling horizontally at 40 m/s at height
of 100 m above the ground. (a) Where does the package strike the ground relative to the point at which it was released? (b) What are horizontal and vertical component of the velocity of the package just before is hits the ground? |
