Answer:
Option D
All electric field lines are parallel
Explanation:
A uniform electric field is one where the intensity of electric field is same through out.
In non- uniform electric fields the intensity or the strength of the electric field is more where the lines of electric fields are close to each other and weak field is represented by the region where the lines of electric fields are not close to each other.
Thus when the lines of electric fields are parallel to each other the intensity of the field or the strength of the electric field is same through out the region or we can say that electric field is uniform in that region.
Answer:
7.0 m/s
Explanation:
First of all, we need to find the time it takes for the fish to reach the water below. This can be done by considering the vertical motion of the fish only, which is a free fall motion, so by using the following suvat equation:
where
s = 4.6 m is the vertical displacement of the fish (choosing downward as positive direction)
u = 0 is the initial vertical velocity of the fish
t is the time
is the acceleration of gravity
Solving for t, we find:
Now can consider the horizontal motion of the fish; since there are no forces along this direction, the fish travels at constant horizontal velocity, and so the distance travelled is
Here we have
d = 6.8 m is the horizontal distance travelled by the fish
t = 0.97 s is the time of flight
Solving,
And since the horizontal velocity of the fish is constant, and it is equal to the initial velocity of the pelican, this means that the initial speed of the pelican was 7.0 m/s.
Answer:
the moon, earth, and sun all must be in alignment ; not just the moon and earth
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