The time taken by traveler to cover the distance is,

Substitute the known values,

Therefore, the time taken by traveler to cover the distance is 89.3 s.
Answer:
The x component of the electric field at y=2m is 
Explanation:
For a linear charge, using <u>Gauss Law</u>, we get that the <em>Electric field (radial) has the following form</em>

<em>where λ is the charge for longitud unit given in the problem, r is replaced by the y coordinate, and there are two known more data</em>. So

is the x component of the Electric field at y=2m on the y axis, which is what we wanted to know.
Answer:
The answer is a.
Explanation: Billions of years ago, there were lakes and rivers in the surface of mars because mars had a denser atmosphere and higher surface temperatures which allowed a vast amount of liquid water on the surface. Recently, most of the water on mars today exist as ice.