teplovoe rasshirenie tel
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teplovoe rasshirenie tel teplovoe rasshirenie tel fizikopediya.rf 1 «prestuplenie» bez nakazaniya na 600-verstnoy nikolaevskoy jeleznoy doroge petrograd – moskva ejegodno v letnee vremya kem-to neizvestnim pribavlyaetsya neskolko sot sajeney dorogoy telefonnoy provoloki, a zimoy to je kolichestvo provoloki bessledno poxishaetsya. na vopros: “kakoy dlini oktyabrskaya (nikolaevskaya) jeleznaya doroga?” — kto-to otvetil: — shestsot sorok kilometrov v srednem; letom metrov na trista dlinnee, chem zimoy. ? 2 izmene izmenenie provisaniya provoda letom i zimoy 3 s 0 dlya chego mejdu relsami ostavlyayut zazori? vse predmeti pri ix nagrevanii razdayutsya vo vse storoni. udlinyaetsya i stalnoy rels letom, kogda ego nagrevaet solntse. .zimoy, kogda ot xoloda relsi sojmutsya, stanut koroche, zazori mo...
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