Answer:
Distance covered 28 km
displacement is 22.8 km North-East
Explanation:
Distance shows how far apart objects or points are from each other. The distance he covered is the sum of all the distance travelled. Therefore:
Distance covered = 12 km + 6 km + 10 km = 28 km
Displacement is a vector quantity (has direction). It is the overall change in position.
The total distance traveled north = 12 km + 10 km = 22 km
The distance traveled east = 6 km
The displacement (d) is:
d² = 22² + 6² = 484 + 36
d² = 520
d = √520 = 22.8 km
Therefore the displacement is 22.8 km North-East
Evaporation is the process of water being evaporated and rising. This water vapor condenses at a certain point and mixes with aerosols to create a cloud.
We can find the potential using the equation
V = kQ/r
Where V is the potential, k corresponds to the Coulomb constant
k = 9. 10^9 N N. m^2/C^2 ,Q is the charge and r is the radius of the sphere (r = 2.5.10^-3 m)
Substituting in the equation we obtain
V = (9. 10^9 N N. m^2/C^2)*(40.10^-12 C)/(2.5.10^-3 m) =
V = 144 V (Potential near its surface)
