Two objects have masses m and 5m, respectively. They both are placed side by side on a frictionless inclined plane and allowed t
1 answer:
Answer:
A.The two objects reach the bottom of the incline at the same time.
Explanation:
-Since there is the incline is frictionless, there's no external force acting on the two objects except gravitational force().
-Gravitational acceleration ,, is equal for any two masses left in free fall despite the difference in massess.
-Therefore, the two bodies will reach the bottom of the incline at the exact same time.
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The electric field produced by a single-point charge is given by
where
k is the Coulomb's constant
q is the charge
r is the distance from the charge
To find the electric field at x=0.200 m, we need to find the electric field produced by each charge at that point, and then find their resultant.
1) The first charge is , and it is located at x=0, so its distance from the point x=0.200 m is
Therefore, the electric field is
And since the charge is negative, the direction of the field is toward the charge, so toward negative x direction.
2) The second charge is and it is located at x=0.800 m, so its distance from the point is
Therefore, the electric field is
And since the charge is negative, the direction of the field is toward the charge, so toward positive x-direction.
3) The total electric field at x=0.200 m will be given by the difference between the two fields (because they are in opposite directions). Taking the x-positive direction as positive direction, we have
and the sign tells us that the field is directed toward negative x-direction.