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I am to find the ratio of the gravitational PE to the Coulomb PE between a [tex]t[/tex] and a [tex]\bar{t}[/tex] quark

I dont know what a [tex]\bar{t}[/tex] quark is, but I am guessing that it is a quark that has a charge opposite of that of the [tex]t[/tex] quark?

I am given that the charges are [tex]+/- \frac{2}{3} e[/tex] and that the mass is 174 GeV/c^2.

I think this is how I should set this question up:

[tex]ratio=-\frac{GMm}{kQq}[/tex]

[tex]ratio=-\frac{2G (174 GeV/c^2)}{k(\frac{2}{3} e) (-\frac{2}{3} e)}[/tex]

is this correct?

I dont know what a [tex]\bar{t}[/tex] quark is, but I am guessing that it is a quark that has a charge opposite of that of the [tex]t[/tex] quark?

I am given that the charges are [tex]+/- \frac{2}{3} e[/tex] and that the mass is 174 GeV/c^2.

I think this is how I should set this question up:

[tex]ratio=-\frac{GMm}{kQq}[/tex]

[tex]ratio=-\frac{2G (174 GeV/c^2)}{k(\frac{2}{3} e) (-\frac{2}{3} e)}[/tex]

is this correct?

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