Homework Help: Physics (electricity)

Posted by Art on Sunday, May 27, 2012 at 6:27pm.

Which formula do you use for this problem ?
two charged spheres, one suspended from a insulated thread and another held in place and unable to move.

when one sphere S1 is brought to a distance of 2.00 x 10^-2m from S2, the acceleration of S1 is 3.00 x 10^10 m/s^2. If S1 is brought to a distance of 4.00 x 12^-2 from S2, then the magnitude of the acceleration of S1 will be ???
What formula do I use???

Physics (electricity) - Elena, Sunday, May 27, 2012 at 6:44pm
Coulomb’s Law
F1=k•q1•q2/r1²
F2 = k•q1•q2/r2²,
Newton’s 2 Law
a1=F1/m = k•q1•q2/r1²•m
a2 =F2/m= k•q1•q2/r2²•m

a1/a2 ={ k•q1•q2/r1²•m}/ {k•q1•q2/r2²•m} =(r2/r1)²

Answer this Question

Related Questions

physics - Two 5.0 g spheres are suspended from a long thread and seperated by a ...
physics - 1)Two metal spheres are suspended from insulation threads. A ...
Physics - charge on sphere - Two 2.0g spheres are attached to each end of a silk...
Physics - 7. Two metal spheres are suspended from insulating threads. A ...
Physics ( electrical ) - If I have two objects charged, one on a insulated ...
Physics - Charge on pith balls - Two pith balls equally charged and each with a ...
physics - Two identical small spheres of mass 2.0g are fastened to the ends of ...
Science. 11th Grade Pre-AP Physics - A positively charged light metal ball is ...
Physics - Charge on sphere (check + help) - Two 2.0g spheres are attached to ...
Physics (please check!) - A positively charged light metal ball is suspended ...

For Further Reading

First Name:
School Subject:
Answer: