The heat flux, or the rate of heat transfer per unit area, is measured in watts (Watts) only A. TRUE B. FALSE
1 answer:
Answer: The given statement is false.
Explanation:
Heat flux is defined as the flow of heat or energy per unit time in per unit area. S.I. unit of heat flux is watts per square meter.
Heat flux is represented by the symbol .
So, it means heat flux is not measured in watts only as it includes per unit area also.
Therefore, we can conclude that the given statement heat flux, or the rate of heat transfer per unit area, is measured in watts (Watts) only, is false.
You might be interested in
Answer:
Approximately .
Explanation:
The specific heat of a material is the amount of energy required to increase unit mass (one gram) of this material by unit temperature (one degree Celsius.)
Calculate the increase in the temperature of this sample:
.
The energy that this sample absorbed should be proportional the increase in its temperature (assuming that no phase change is involved.)
It took of energy to raise the temperature of this sample by
. Therefore, raising the temperature of this sample by
(unit temperature) would take only
as much energy. That corresponds to approximately
of energy.
On the other hand, the energy required to raise the temperature of this material by is proportional to the mass of the sample (also assuming no phase change.)
It took approximately of energy to raise the temperature of
of this material by
. Therefore, it would take only
as much energy to raise the temperature of
(unit mass) of this material by
. That corresponds to approximately
of energy.
In other words, it takes approximately to raise
(unit mass) of this material by
. Therefore, by definition, the specific heat of this material would be approximately
.