{"id":1325,"date":"2012-08-29T11:18:59","date_gmt":"2012-08-29T09:18:59","guid":{"rendered":"http:\/\/www.zsvltava.cz\/fyzika\/?p=1325"},"modified":"2020-03-30T13:56:21","modified_gmt":"2020-03-30T11:56:21","slug":"priklady-na-vypocet-hustoty-objemu-a-hmotnosti","status":"publish","type":"post","link":"https:\/\/www.zsvltava.cz\/fyzika\/?p=1325","title":{"rendered":"P\u0159\u00edklady na v\u00fdpo\u010det hustoty, objemu a hmotnosti"},"content":{"rendered":"
    \n
  1. Zlato m\u00e1 hustotu 19 300 kg\/m3<\/sup>. Unesl(a) bys v jedn\u00e9 ruce kosti\u010dku zlata, kter\u00e1 by m\u011bla hranu dlouhou 5 cm a byla by cel\u00e1 ze zlata?\n<\/li>\n
  2. Jak\u00e9 rozm\u011bry by mohl m\u00edt hranol ze zlata, pokud by m\u011bl v\u00e1\u017eit 20 g?
    \n(Rada: vypo\u010d\u00edtej objem a pokus se odhadnout jednotliv\u00e9 strany.)\n<\/li>\n
  3. O kolik v\u00edce st\u0159\u00edbra (hustota: 10 490 kg\/m3<\/sup>) bude ve 300 gramov\u00e9m p\u0159edm\u011btu, ve srovn\u00e1n\u00ed se stejn\u011b t\u011b\u017ek\u00fdm p\u0159edm\u011btem ze zlata? <\/li>\n
  4. Ebenov\u00e9 d\u0159evo m\u00e1 2 kr\u00e1t v\u011bt\u0161\u00ed hustotu ne\u017e d\u0159evo jedlov\u00e9. 2,8 m3<\/sup> jedlov\u00e9ho d\u0159eva v\u00e1\u017e\u00ed 1,68 t. Jak\u00e1 je hustota ebenov\u00e9ho d\u0159eva?<\/li>\n
  5. Do \u017eelezni\u010dn\u00edho vag\u00f3nu se vejde 75 m3<\/sup> n\u00e1kladu. Maxim\u00e1ln\u00ed hmotnost, kterou uveze je 30 tun. Jakou nejv\u011bt\u0161\u00ed hustotu m\u016f\u017ee m\u00edt materi\u00e1l, se kter\u00fdm bychom mohli zcela zaplnit cel\u00fd tento vag\u00f3n?<\/li>\n
  6. Jak\u00e9 mno\u017estv\u00ed ra\u0161eliny (hustota 350 kg\/m3<\/sup>) uveze 15 vag\u00f3n\u016f z p\u0159edchoz\u00edho p\u0159\u00edkladu?<\/li>\n
  7. Hustota betonu je 1800 kg\/m3<\/sup>.
    Kolik v\u00e1\u017e\u00ed betonov\u00fd sloup o rozm\u011brech 1,6 m × 25 cm × 25 cm? <\/li>\n
  8. Ryb\u00e1\u0159i pou\u017e\u00edvaj\u00ed mal\u00e1 ol\u016fvka, aby se jinak lehk\u00fd h\u00e1\u010dek dob\u0159e pono\u0159il do vody. Vypo\u010d\u00edtej, jakou hustotu m\u00e1 olovo, kdy\u017e ol\u016fvko o objemu 0,44 cm3<\/sup> v\u00e1\u017e\u00ed 5 g.<\/li>\n
  9. Na sochu bylo spot\u0159ebov\u00e1no 150 dm3<\/sup> lipov\u00e9ho d\u0159eva (480 kg\/m3<\/sup>). Jak\u00e9 mno\u017estv\u00ed oceli (13 000 kg\/m3<\/sup>) bude pot\u0159eba k dorovn\u00e1n\u00ed v\u00e1hy sochy na 100 kg? Mno\u017estv\u00ed vyj\u00e1d\u0159i jako objem v cm3<\/sup>.<\/li>\n
  10. \u010cerstv\u00fd sn\u00edh m\u00e1 hustotu 100 kg\/m3<\/sup>. Mokr\u00fd sn\u00edh m\u00e1 hustotu \u010dty\u0159n\u00e1sobnou. Jak\u00e1 hmotnost sn\u011bhu le\u017e\u00ed na st\u0159e\u0161e o rozm\u011brech 5 m × 12 m, kdy\u017e napadlo 12 cm sn\u011bhu?<\/li>\n
  11. Kolik v\u00e1\u017e\u00ed sn\u011bhul\u00e1k, na kter\u00e9ho bylo spot\u0159ebov\u00e1no 14,7 litru sn\u011bhu?<\/li>\n
  12. Hustota vzduchu je 1,29 kg\/m3<\/sup>. Kolik bude v\u00e1\u017eit bal\u00f3n o objemu 659,4 dm3<\/sup>? Hmotnost pr\u00e1zdn\u00e9ho bal\u00f3nu je 1200 g.<\/li>\n
  13. Jak\u00e1 je celkov\u00e1 hmotnost vzduchu v m\u00edstnosti, ve kter\u00e9 se pr\u00e1v\u011b nach\u00e1z\u00ed\u0161? (Hustota vzduchu je 1,29 kg\/m3<\/sup>)<\/li>\n
  14. P\u011btilitrov\u00e1 sklenice medu v\u00e1\u017e\u00ed 7000 g.\n
      \n
    1. Jak\u00e1 je hustota medu?<\/li>\n
    2. Kolik sklenic o objemu 320 ml bude t\u0159eba na uchov\u00e1n\u00ed 10 kilogram\u016f medu?<\/li>\n
    3. \u010c\u00e1st medu tvo\u0159\u00ed v\u017edy voda. Podle typu medu tvo\u0159\u00ed voda mezi 1\/13 a\u017e 1\/21 objemu. Jak\u00fd je objem vody ve 3 kg medu, u kter\u00e9ho tvo\u0159\u00ed voda 1\/15 objemu?<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n

      NATR\u00c9NUJ V\u00ddPO\u010cTY<\/u> na gener\u00e1toru p\u0159\u00edklad\u016f s kontrolou v\u00fdsledk\u016f.<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

      Zlato m\u00e1 hustotu 19 300 kg\/m3. Unesl(a) bys v jedn\u00e9 ruce kosti\u010dku zlata, kter\u00e1 by m\u011bla hranu dlouhou 5 cm a byla by cel\u00e1 ze zlata? …. <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[57,39],"tags":[32,55],"class_list":["post-1325","post","type-post","status-publish","format-standard","hentry","category-6-rocnik","category-priklady-pro-6-rocnik","tag-objem-a-hustota","tag-priklad"],"_links":{"self":[{"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/posts\/1325","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1325"}],"version-history":[{"count":0,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/posts\/1325\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1325"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1325"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1325"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}