The correct answer you should get is C.
Answer:
Q= 231.88 W/m²
Explanation:
Given that
L= 20 cm
K= 2.79 W/m·K
T₁=50°C
T₂= 22°C
h=15 W/m₂·K
The total thermal resistance
Now by putting the values
R= 0.138 K/W ( for heat flux A= 1 m²)
Heat flux Q= ΔT/R
Q= (50-22)/0.138 = 32/0.138 W
Q= 231.88 W/m²
Answer:
left
Explanation:
N pole should be in the same direction of the field, so N will point left.
No.
In the northern hemisphere, summer is consider to be around June/July/August.
In the Southern Hemisphere, it is the opposite: summer is in the months of December/January/February.
In some areas such as near the equator, the seasons themselves differ. For example, where I live, we have three seasons: wet season, dry season, and build up.
Hope this helps.
The reflected ray is rotated through 12°.
<h3 /><h3>What is reflection?</h3>
Freflection can be defined as the turning back of a ray of light when its strikes a plane's surface.
There are 2 laws of reflection
<h3>Laws of reflection</h3>
(1) The first law of reflection states that the incident ray the reflected ray and the normal all at the point of incidence lie in the same plane
(2) The second law of reflection states that the angle of incident is equal to the angle of reflection.
From the question, if the incidence ray is rotated through 6°, then the reflected ray is rotated through 12°
Hence, The reflected ray is rotated through 12°.