a plan on a search mission flew east from an airport, turned, and flew west back to the airport. the plane cruised at 200 km/h w
hen flying east and 300 km/h when flying west. if the plane was in the air for 6 hours, how far from the airport did it it travel?
1 answer:
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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,