Answer
given,
length of the track = 200 m
speed of runner 1 = 6.20 m/s
speed of the runner 2 = 5.5 m/s
distance covered by the fastest runner, d = 6.2 t
distance covered by the slow runner,d = 5.50 t + 200
time taken to overtake for the first time
6.2 t = 5.50 t + 200
0.7 t = 200
t = 285.7 s
distance covered from the starting point
d = 6.2 t
d = 6.2 x 285.7
d = 1771.43 m
for next overtaking time taken will be double
t' = 258.7 x 2 = 571.4 s
distance travel by the runner from the starting point
d' = 6.2 t'
d' = 6.2 x 571.4
d' = 3542.68 m
<span>the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.</span>
Answer:
c They can only travel without a medium.
Explanation:
Electromagnetic waves are made up of electric field and magnetic field.
Here electric field will induce magnetic field and magnetic field will induce electric field.
So this type of field do not require any medium and in vacuum or air the speed of electromagnetic waves are same as speed of light

also we have different range of electromagnetic waves out of which a small range of electromagnetic waves is of visible region in which these waves are visible to us.
so correct answer is
c They can only travel without a medium.