A 2.60 g air-inflated balloon is given an excess negative charge of q_(1)=-3.50 times 10^(-8)C by rubbing it with a blanket. A charged rod can then be held above the balloon at a distance of d=5.20cm and make the balloon float in place. Model the balloon and the rod as point charges. The Coulomb force constant is (1)/(4 pi epsi lon_(0))=8.99 times solutionspile.com

Question

A 2.60 g air-inflated balloon is given an excess negative charge of

q_(1)=-3.50\times 10^(-8)C

by rubbing it with a blanket. A charged rod can then be held above the balloon at a distance of

d=5.20cm

and make the balloon float in place. Model the balloon and the rod as point charges. The Coulomb force constant is

(1)/(4\pi \epsi lon_(0))=8.99\times 10^(9)N*(m^(2))/(C^(2))

and the acceleration due to gravity is

g=9.81(m)/(s^(2))

. In order for this to occur, what must the charge polarity of the rod be?

q_(2)

is neutral

q_(2)

is negative

q_(2)

is positive

q_(2)

is a proton How much charge

q_(2)

does the rod have?

q_(2)=

?

C

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