Answer:
They have the same wavelength
Answer:
The magnitude of the magnetic force on the rod is 0.037 N.
Explanation:
The magnetic force is given by:

Since the charge (q) is:
Where<em> I</em> is the current = 1.40 A, and <em>t</em> the time
And the speed (v):
Where <em>L </em>is the tracks separation = 2.20 cm = 0.022 m
Hence, the magnetic force is:

Where <em>B </em>is the magnetic field = 1.20 T and <em>θ</em> is the angle between the tracks and the magnetic field = 90°

Therefore, the magnitude of the magnetic force on the rod is 0.037 N.
I hope it helps you!
You completed 100.000 m in 11.800 second
you aced out the other runner by 0.001 seconds
time taken by other runner to finish = 11.800 + 0.001 = 11.801s
speed of other runner = 100/11.801 m/s
distance covered by him in 11.8 s = 100/11.801 × 11.8 = 99.992 m
you won by = 100 - 99.992 = 0.008 meter