Answer:

Explanation:
Using the Gauss Law, we obtain the electric Field for a uniform large line of charge:


We calculate the potential difference from the electric field:

<u>Answer:</u>
2.39 kg
<u>Explanation:</u>
There is conservation of momentum here in this problem so we will use the following problem:

where the mass of the student
is 48.5 kg,
the mass of the skateboard
is
kg,
the initial speed of the student
is 4.25 m/s; and
the speed of the student and skateboard
is 4.05 m/s.
So substituting the given values in the above formula to get:





Therefore, the mass of the skateboard is 2.39 kg.
I think the answer is c) 1
Hope it helps and have a good day
Answer:
Weather and erosion
Explanation:
Thats what makes sediment rocks sediment rocks