Two identical + 8.5 C point charges are initially 2.5 cm from each other. Part A

Question

Two identical + 8.5 C point charges are initially 2.5 cm from each other.

Part A

If they are released at the same instant from rest, how fast will each be moving when they are very far away from each other? Assume they have identical masses of 3.0 mg

Two identical + 8.5 C point charges are initially 2.5 cm from each other.

Part A

If they are released at the same instant from rest, how fast will each be moving when they are very far away from each other? Assume they have identical masses of 3.0 mg

Explanation / Answer

here,

charge , q = 8.5 uC

q = 8.5*10^-6 C

distance between the charges , d = 2.5 cm

d = 0.025 m

mass of each charge , m = 3 mg

m = 3 * 10^-4 kg

let the speed of partiicle when they are away from each other be v

electrical potential energy lost = kinetic energy gained

k * q^2/d = 2* 0.5 * m*v^2

9*10^9 * (8.5*10^-6)^2 / 0.025 = 3 * 10^-4 * v^2

v = 294.45 m/s

the speed of partiicle when they are away from each other is 294.45 m/s

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