<span>Solar prominences
themselves are of no concern because they are visible in the Hydrogen Alpha
wavelength. They are anchored in place by magnetic fields. When these fields
break or reconnect, it can send the plasma that makes up the prominence away
from the sun. If one of these clouds impacts Earth, they are called CMEs or
coronal mass ejections. Depending on the magnetic orientation of the cloud with
respect to Earth's the CME can break down our magnetic field resulting in
geomagnetic storms, aurorae, power grid fluctuations, and particle radiation
near the poles, satellite single upset events, and radio blackouts. </span>
<span>
</span>
<span>Thus, letter a is the answer. </span>
The magnitude of the electric force between two obejcts with charge
and
is given by Coulomb's law:
where
is the Coulomb's constant
and r is the distance between the two objects.
In our problem, the distance is
, while the magnitudes of the two charges are
(we can neglect the sign of the second charge, since we are interested only in the magnitude of the force).
So, using the formula and the data of the problem, we find
The maximum height reached by the ball thrown by the boy is determined as 12.5 m.
<h3>
Angle of the projection</h3>
The angle of projection of the ball is calculated as follows;
R = u²sin2θ/g
- at maximum range, θ = 45 degrees
50 = u²/9.8
u² = 50 x 9.8
u² = 490
u = 22.14 m/s
<h3>Maximum height of the ball</h3>
H = u²sin²θ/2g
H = (22.14² x (sin45)²)/(2 x 9.8)
H = 12.5 m
Thus, the maximum height reached by the ball thrown by the boy is determined as 12.5 m.
Learn more about maximum height here: brainly.com/question/12446886
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There are many ways to calculate force. However, they are completely different aspects. The force on an area is pressure, so F = p*A. In magnetic fields you use another formule (forgot the formule atm). Unless you define what kind of force you are looking for, I can't help you any further.
