A set of charged plates that have an area of 8.22*10^-4 m^2 and a separation of 2.42*10^-5 m have a potential difference of 25.0
2 answers:
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Answer : The correct option is, (C) 17 m/s
Explanation :
Formula used :
where,
K.E = kinetic energy = 6.8 J
m = mass of object = 46 g = 0.046 kg (1 kg = 1000 g)
v = velocity
Now put all the given values in the above formula, we get:
Therefore, the ball's velocity be as it leaves the cannon is, 17 m/s