To solve this problem we will use the equilibrium conditions in the Electrostatic Forces. In turn, we will use the concept formulated from Coulomb's laws to determine the intensity of the Forces and make the respective considerations.
Our values for the two charges are:
As a general consideration we will start by determining that they are at a unit distance (1) separated from each other. And considering that both are negative charges, they will be subjected to repulsive force. Said equilibrium compensation will be achieved only by placing a third force between the two.
Let the third charge be 
is placed at a distance x from 
The force on 
due to 
is
The condition of equilibrium is
from
To find the magnitude of we use 
The magnitude of the third charge must be 0.43 the first charge 
High temperature solids (d)
Answer:
It will take 40 seconds to catch the speeding car
Explanation:
Initial speed of the patrolman = 55 mph
after one minute speed of patrol man = 115 mph
now acceleration of patrolman is given by
now at this acceleration the distance covered by patrolman in "t" time is given as
now we know the speed of the speeding car is given as
now in the same time distance covered by it
now since the distance covered is same
Answer:
436.56 centimeters
Explanation:
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I think the correct answer from the choices listed above is option B. The very high voltage needed to create a spark across the spark plug is produced at the transformer's secondary winding. <span>The secondary coil is engulfed by a powerful and changing magnetic field. This field induces a current in the coils -- a very high-voltage current.</span>
