I think it is 4 cm because if you look hard enough and work the problem the number pops in you head. Lol
If you are operating a boat and you hear <span>the fog signal of another boat you cannot see, you should immediately reverse the engine or even stop it if you can do that (for the safety of everyone).
Then, you should ask someone else to go to the bow and assist in looking (maybe he/she can see the other boat that you cannot see) </span><span />
Answer:
0.334 m
Explanation:
The magnetic field due to current in a straight thin wire,
, is given by

where
is the permeability of free spave with value
and
is the distance from the wire.

Substituting the values from the question,


Answer:
Explanation:
Given

Motor reverse its direction when \omega =0



(b)




