The temperature difference between the wooden wall is 16⁰C, and the heat current per square metre of the wall is 7,325 W/m².
<h3>
Temperature difference between the wooden wall</h3>
The temperature difference between the wooden wall is calculated as follows;
- Let the brick wall = wall A
- Let the wooden wall = wall B
- Let the area of the walls = A
<h3 /><h3>Heat flowing in the walls</h3>
Q = KL(ΔT)
Q = 0.5 x 0.1 x (20 + 273)
Q = 14.65 W
<h3>Heat current per square meter of the Walls</h3>
QA = W/A
QA = (14.65)/A
- Let the area of the wall = 10 cm x 2 cm = 0.1 m x 0.02 m = 0.002 m².
QA = 14.65/0.002
QA = 7,325 W/m²
Learn more about thermal conductivity here: brainly.com/question/11213835
Metric system. important because it saves us time due to the fact that we do not have to convert our units every time.
The circumference of the circle after t seconds = 25.12 t
Given data,
The radius of each circular wave will increase by four centimeters per second (cm/s)
In 1 second of circular wave radius = 4cm
In 1*t second of circular wave radius = 4t cm
As a result, the radius of the circular wave after t seconds is 4t cm.
We already know that the circumference of a circle is given by = 2πr, where r is the circle's radius.
As a result, the radius of a circular wave after t seconds is = 2π * radius of a circular wave after t seconds = 2π * 4t
= 8πt
( Taking π = 3.14 )
As a result, the circumference of the circle after t seconds = 8πt
= 3.14t
= 25.12t
Find more on circumference at : brainly.in/question/49774764
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Answer: d
Explanation:
had the same study island question
