A students walks one hour. She walks 4 blocks east and 2 blocks west. Her average velocity is?
1 answer:
Let us consider the following figure
<em>figure</em><em> </em><em>is</em><em> </em><em>in</em><em> </em><em>pict</em><em>ure</em>
So, his/her total displacement = 2 blocks.
total time = 1 hour
Average Velocity
= Total displacement/ total time
= 2 blocks/ 1 hour
= 2 blocks/ h
So, her/his average velocity is 2 blocks per hour.
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The strength of the electric field is 5 N/C
Explanation:
The magnitude of the electric field produced by a single-point charge is given by:
where
is the Coulomb's constant
Q is the magnitude of the charge
r is the distance from the charge
In this problem, we have:
is the charge producing the field
r = 100 m is the distance from the charge at which we want to calculate the field
Substituting into the equation, we find the s trength of the electric field:
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