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Module 1

This module will give you an introduction to the subject of heat and temperature.

 

 

Module 2

This module will give you an introduction to the subject of expansion. Attemtp the following questions and then view the module.

1.  Determine the final length of a beam that is heated in a fire to 415C.

Ambient temperature of beam = 15C

Co-efficient of linear expansion = 0.000015 C

Original length of beam = 7.5m

 

2.   Determine how much a metal bridge will expand on a freezing cold day when the sun comes out and heats it to 30C

Temperature of = -10C

Co-efficient of linear expansion = 0.000032 C

Original length of bridge = 50m

 

 

 

Module 3

Attempt the following question and then view the module.

At 25C a sphere has a diameter of 1m.  It is involved in a fire and heated to 100C. What is the final volume of the sphere?

Ambient temperature of steel = 15C

Co-efficient of linear expansion = 0.0000150C

 

 

Module 4

Attempt the following question and then view the module.

The density of a liquid is 1000kg.m3 at 0C and it is 900kg.m3 at 100C.

Determine the coefficient of cubical expansion of the liquid?

 

 

 

Module 5

Attempt the following question and then view the module.

A bulk fuel storage cylinder 5m in diameter and 8.5m high made of  steel is 90% filled with aircraft fuel at a temperature of 18C. If the storage cylinder is involved in a fire and heated to 415C, how much fuel will be forced out?

Co-efficient of linear expansion of steel  = 3.75 x 10-6 C

Co-efficient of cubical expansion of aircraft fuel  = 950 x 10-6 C

 

 

 

Module 6

Attempt the following question and then view the module.

 

A petrol tanker with a mass of 16 tonnes fully laden is travelling at 60 km.hour on level ground. The tanker carries out an emergency stop, how hot will the brakes be?

Mass of brakes on each wheel = 7.5kg

The vehicle has 10 wheels.

The outside temperature is 5C.

The specific heat capacity of the metal brakes is 350j/kg/K