A point charge Q is located a short distance from a point charge 3Q, and no other charges are present. If the electrical force o
1 answer:
Answer:
d) F
Explanation:
According to columb's law:
"The magnitude of electrostatic force between two charges is directly proportional to the product of magnitude of two charges and inversly proportional to separation between them."
If q₁ and q₂ are magnitude of two charges, d is distance between them and k is dielectric constant, then force F is given by
According to this force exerted on point charge Q is same as that of 3Q, so force point 3Q charge experience is also F
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As per Newton's law when unbalanced force is acting on the object
so acceleration of the object is given as
since object is accelerating here so we can say that due to unbalanced force there must be change in velocity of the object
So correct answer regarding change in velocity must be given as
<u>3. Decelerate </u>
<u>4. Stop moving </u>
<u>5. Accelerate </u>
<u>7. Start moving</u>
At a constant speed of 5.00 m/s, the speed at which the poodle completes a full revolution is
so that its period is (where 1 revolution corresponds exactly to 360 degrees). We use this to determine how much of the circular path the poodle traverses in each given time interval with duration
. Denote by
the angle between the velocity vectors (same as the angle subtended by the arc the poodle traverses), then
We can then compute the magnitude of the velocity vector differences for each time interval by using the law of cosines:
and in turn we find the magnitude of the average acceleration vectors to be
So that takes care of parts A, C, and E. Unfortunately, without knowing the poodle's starting position, it's impossible to tell precisely in what directions each average acceleration vector points.
