00:01
Good day, the topic is about heat transfer.
00:04
Heat is a form of energy that flows from a hotter body to a colder body.
00:08
When we neglect heat loss to the surrounding, then the heat absorbed by the colder body must be equal to the heat that is released by the hotter one.
00:16
The other way of saying it, the total heat that is transferred to or from the system must be equal to zero.
00:22
When heat is absorbed or reduced by the body, the temperature of the body may change according to the given equation.
00:29
Q is equal to m -c delta t where q is the heat, m is the mass, c is the specific heat, and delta t is the change in temperature, which can be solved as the difference between the final temperature tf and the initial temperature ti.
00:43
Suppose we have a glass thermometer, which mass is 31 .5, that reads 23 .6 degrees celsius before it is placed in 135ml of water.
00:57
It is found out that after equilibrium, the temperature of the glass as well as the water is found to be 41 .8 degrees celsius.
01:07
We wish to find the initial temperature of the water...