Answer:
a) 500 m
b) 50 s
c) speed= distance/time= 500/50= 10 m/s
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Answer:
Electric field, 
Explanation:
It is given that, a proton in a particular electric field experiences an electric force whose magnitude is equal to the weight of the proton such that,




or

So, the magnitude of electric field at the location of the proton is
. Hence, this is the required solution.
The final velocity of the object is 16m\s.
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