Answer
A softball has a (negative) acceleration when it is thrown. A soft ball has a (positive) acceleration when it is caughtExplanation:
As we know that acceleration is directly proportional to force, therefore as the force is doubled, acceleration gets doubled too.
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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The answer to this question is D or the last one
The motor effect is the term used when a current-carrying wire in the presence of a magnetic field experiences a force.