A pair of eyeglass frames is made of epoxy plastic at


A pair of eyeglass frames is made of epoxy plastic. At roomtemperature (assume 20 C), the frames have circular lensholes 1.53 cm in radius. To what temperature must the frames beheated in order to insert lenses 1.55 cm in radius? Assume that theaverage coefficient of linear expansion for epoxy is 0.0002( C)−1. Answer in units of C.

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Physics: A pair of eyeglass frames is made of epoxy plastic at
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