At what wind speed (in m/s) does 5°C air cause the same chill factor as still ai
ID: 1611485 • Letter: A
Question
At what wind speed (in m/s) does 5°C air cause the same chill factor as still air at 15°C? (Use the data from this table to answer this question.)
Table 14.4 Wind-Chill Factors
Moving air temperature
---------Wind speed (m/s)
(oC)
-----2
5
10
15
20
5----
3
1
8
10
12
2----
0
7
12
16
18
0----
2
9
15
18
20
5----
7
15
22
26
29
10----
12
21
29
34
36
20----
23
34
44
50
52
40----
44
59
73
82
84
Table 14.4 Wind-Chill Factors
Moving air temperature
---------Wind speed (m/s)
(oC)
-----2
5
10
15
20
5----
3
1
8
10
12
2----
0
7
12
16
18
0----
2
9
15
18
20
5----
7
15
22
26
29
10----
12
21
29
34
36
20----
23
34
44
50
52
40----
44
59
73
82
84
Explanation / Answer
From above table moving air at 5 m/s and -5 degree celcius causes produces same chill factor as still air at -15 degree celcius ( as per bove data table )
The numbers below the wind speed row, are basically the corresponding temperature for still wind.
another eg. -10 degree wind moving at 2 m/s produces same chill factor as still wind at -12 degree celcius.
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