[{"question":"Dopl\u0148te: Teleso ponoren\u00e9 do kvapaliny:","answers":["Je nad\u013eajh\u010dovan\u00e9 tia\u017eovou silou","Je nad\u013eah\u010dovan\u00e9 vztlakovou silou","Je nad\u013eah\u010dovan\u00e9 gravita\u010dnou silou","je nad\u013eah\u010dovan\u00e9 magnetickou silou"],"correct":"Je nad\u013eah\u010dovan\u00e9 vztlakovou silou","order":"1"},{"question":"Ak je hustota tuh\u00e9ho telesa v\u00e4\u010d\u0161ia ako hustota kvapaliny, v ktorej je ponoren\u00e9, teleso","answers":["sa vzn\u00e1\u0161a","tak\u00e9 teleso sa do kvapaliny ani nedostane","kles\u00e1 ku dnu","st\u00fapa k hladine"],"correct":"kles\u00e1 ku dnu","order":"2"},{"question":"Vypo\u010d\u00edtajte hustotu gule s\u00a0hmotnos\u0165ou 20 kg, ak na jej vytiahnutie z\u00a0vody je potrebn\u00e1 sila 100 N. Hustota vody je 1000 kg.m-3","answers":["1000","2000","3000","4000"],"correct":"2000","order":"3"},{"question":"Ak teleso ponor\u00edme do vody s hustotou 1000 kg\/m3, ponor\u00ed sa do h\u013abky 18cm. Ak t\u00fato ist\u00fa sk\u00famavku ponor\u00edme do roztoku nezn\u00e1mej kvapaliny, ponor\u00ed sa do h\u013abky 16cm. Ak\u00e1 je hustota nezn\u00e1mej kvapaliny? (pri v\u00fdpo\u010dte si objem vyjadrite ako V=S*h)","answers":["1100","1115","1120","1125"],"correct":"1125","order":"4"},{"question":"Ak\u00e9 dve sily p\u00f4sobia v ide\u00e1lnom pr\u00edpade na teleso ponoren\u00e9 do kvapaliny?","answers":["vztlakov\u00e1 a kinetick\u00e1","tia\u017eov\u00e1 a magnetick\u00e1","tia\u017eov\u00e1 a gravita\u010dn\u00e1","tia\u017eov\u00e1 a vztlakov\u00e1"],"correct":"tia\u017eov\u00e1 a vztlakov\u00e1","order":"5"},{"question":"Ak\u00fd v\u00fdsledn\u00fd vz\u0165ah dostaneme, ak posklad\u00e1me sily, ktor\u00e9 p\u00f4sobia na teleso ponoren\u00e9 v kvapaline?","answers":["V*g*(\u03c1k - \u03c1t)","V*g*(\u03c1t - \u03c1k)","V*\u03c1t(g - \u03c1k)","V*\u03c1k*(\u03c1t - g)"],"correct":"V*g*(\u03c1t - \u03c1k)","order":"6"},{"question":"Hranol pl\u00e1vaj\u00faci v kvapaline s\u00a0hustotu 1500 kg.m-3 m\u00e1 ponoren\u00e9 dve p\u00e4tiny svojho celkov\u00e9ho objemu. Ak\u00e1 je hustota dreva?","answers":["400","500","600","700"],"correct":"600","order":"7"},{"question":"\u010co mus\u00ed plati\u0165, aby sa teleso ponoren\u00e9 v kvapaline vo\u013ene v tejto kvapaline vzn\u00e1\u0161alo?","answers":["hustota kvapaliny mus\u00ed by\u0165 v\u00e4\u010d\u0161ia ako hustota telesa","hustota kvapaliny mus\u00ed by\u0165 men\u0161ia ako hustota telesa","hustota kvapaliny mus\u00ed by\u0165 rovnak\u00e1 ako hustota telesa","tak\u00fdto pr\u00edpad nikdy nenastane"],"correct":"hustota kvapaliny mus\u00ed by\u0165 rovnak\u00e1 ako hustota telesa","order":"8"},{"question":"Dopl\u0148te znenie Archimedovho z\u00e1kona: teleso ponoren\u00e9 do kvapaliny je nad\u013eah\u010dovan\u00e9 vztlakovou silou, ktorej ve\u013ekos\u0165 sa rovn\u00e1:","answers":["tia\u017ei kvapaliny s rovnak\u00fdm objemom ako je objem ponorenej \u010dasti telesa","tia\u017ei kvapaliny s v\u00e4\u010d\u0161\u00edm objemom ako je objem ponorenej \u010dasti telesa","tia\u017ei kvapaliny s men\u0161\u00edm objemom ako je objem ponorenej \u010dasti telesa","tia\u017ei kvapaliny s r\u00f4znym objemom ako je objem ponorenej \u010dasti telesa"],"correct":"tia\u017ei kvapaliny s rovnak\u00fdm objemom ako je objem ponorenej \u010dasti telesa","order":"9"},{"question":"Ak\u00fd vz\u0165ah plat\u00ed medzi objemom ponorenej \u010dasti telesa a celkov\u00fdm objemom telesa: Vp\/Vt","answers":["hustota telesa \/ hustota kvapaliny","hustota telesa - hustota kvapaliny","hustota telesa + hustota kvapaliny","hustota telesa * hustota kvapaliny"],"correct":"hustota telesa \/ hustota kvapaliny","order":"10"}]