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A rock is suspended from the lower end of a light string. When the rock is...

A rock is suspended from the lower end of a light string. When the rock is totally immersed in water, the tension in the string is 1.20 N. When the rock is totally immersed in ethanol, the tension in the string is 1.60 N.

a. Calculate the weight of the rock.

[note]: Values for water or ethanol were not given to me, might have to look them up.

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