Answer:
The electric field intensity is <u>30000 N/C.</u>
Explanation:
Given:
Magnitude of the point charge is, 
Distance of the given point from the point charge is, 
Electric field intensity is directly proportional to the magnitude of point charge and inversely proportional to the square of the distance of the point and the given charge. 
Therefore, electric field intensity 'E' at a distance of 'd' from a point charge 'q' is given as:

Plug in  . Solve for 'E'.
. Solve for 'E'.

Therefore, the electric field intensity at a point 3 cm from the point charge is 30000 N/C.
 
        
             
        
        
        
Potential energy U = mgh 
Given h = 123 m,
mg = F = 780 N
Then
U = (123)(780) 
= 95940
= 9.59 x 10^4
        
             
        
        
        
If we are to place dots to teh places that have been struck by an earthquake these past 100 years, the dots would be concentrated in the east and southeast Asia region. This is because of the presence of the Pacific ring of fire. This is a major area in the Pacific Ocean where most of the earthquakes are likely to occur. 
        
             
        
        
        
Answer:
Both speed and velocity are changing.
Explanation:
They are both going up so both are changing