What is the magnitude of the charge?

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To determine the magnitude of the charge on each bead, the force acting on one bead can be calculated using F = ma, where the acceleration is 150 m/s² and the mass is 1.0 g (0.001 kg). This force can also be expressed using Coulomb's law as F = kQQ / r², with k being the electrostatic constant and r being the distance between the beads (0.5 m). The mass used in the calculations should be the mass of one bead, not the total mass of both. By equating the two expressions for force, the charge on each bead can be solved. The final calculation will yield the magnitude of the charge on each bead.
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Two 1.0g beads are charged equally and placed 50cm apart. When released, they begin to accelerate at 150m/s2. What is the magnitude of the charge on each bead?

The equations I used:

F = ma
F = kQQ / r2

I was just wondering about the mass. Do I have to use the total mass (2.0g) for both beads or just the 1.0g?
 
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shashaeee said:
Two 1.0g beads are charged equally and placed 50cm apart. When released, they begin to accelerate at 150m/s2. What is the magnitude of the charge on each bead?

The equations I used:

F = ma
F = kQQ / r2

I was just wondering about the mass. Do I have to use the total mass (2.0g) for both beads or just the 1.0g?

have a careful think about what object(s) the force(s) act on and the mass of the object(s).
 

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