Exposure to what type of radiant energy is sensed by human skin as warmth?
2 answers:
You might be interested in
Answer:
The ratio of the diameter of iron to Cu is;
Explanation:
R=(ρL)/A
- R is resistance,
- L is length,
- A is area,
- ρ is resistivity
- d is diameter
from the question the two materials have the same resistance per unit length.
for iron =
for copper
This means we can equate ρ/A for both materials.
re-arranging the equation we have,