Answer:
(a) Q = 142.67 W
(b) Basal Metabolic Rate = 178.33 W
Explanation:
(a)
We can find the heat radiated by the person by using Stefan-Boltzman's law:
where,
Q = heat radiated per second = ?
σ = Stefan-Boltzman Constant = 5.6703 x 10⁻⁸ W/m².k⁴
A = Surface Area = 2 m²
T = Temperature of Skin = 30° C + 273 = 303 k
Ts = Temperature of room = 18° C +273 = 291 k
Therefore,
![Q = (5.6703\ x\ 10^{-8}\ W/m^2.k^4)(2\ m^2)[(303\ k)^4-(291\ k)^4]](https://tex.z-dn.net/?f=Q%20%3D%20%285.6703%5C%20x%5C%2010%5E%7B-8%7D%5C%20W%2Fm%5E2.k%5E4%29%282%5C%20m%5E2%29%5B%28303%5C%20k%29%5E4-%28291%5C%20k%29%5E4%5D)
<u></u>
<u>Q = 142.67 W</u>
<u></u>
(b)
Since the heat calculated in part (a) is 80 percent of basal metabolic rate. Therefore,
<u>Basal Metabolic Rate = 178.33 W</u>
The statement 'Swamps and other wetlands do not offer much value to humans' is FALSE.
<h3>What are Swamps?</h3>
Swamps and other wetlands are specific ecosystems that are abundant in biodiversity and therefore offer many advantages.
Biodiversity is fundamental to discovering new biotechnological applications and therefore swamps are fundamental for humans.
In conclusion, The statement 'Swamps and other wetlands do not offer much value to humans' is FALSE.
Learn more about swamp diversity here:
brainly.com/question/14619172
#SPJ1
Answer:
a) T = 0.5 s
b) v = 1.2π m/s ≈ 3.77 m/s
Explanation:
It makes two revolutions in one second so makes one revolution in ½ second
circumference of the circle is
C = 2πr = 0.6π m
which it traverses in one time period
0.6π m / 0.5 s = 1.2π m/s
Answer:
Explanation:
B
A primary source is one that is written by the person who lived through an advenure or is one doing the action and recording it.
In this case, the answer is B.
Most frequently, for a historian, a primary source is something like a diary or a bunch of letter written by someone experiencing something.
It cannot be about someone else's work. Not C or D
A textbook is not the answer either. It is a bulky summary of scientific, or other kind of thought.
