{"id":528,"date":"2019-12-17T09:17:35","date_gmt":"2019-12-17T07:17:35","guid":{"rendered":"https:\/\/blog.edu.turku.fi\/scienceed\/?p=528"},"modified":"2019-12-17T09:17:35","modified_gmt":"2019-12-17T07:17:35","slug":"how-much-can-a-magnet-carry","status":"publish","type":"post","link":"https:\/\/blog.edu.turku.fi\/scienceed\/2019\/12\/17\/how-much-can-a-magnet-carry\/","title":{"rendered":"How much can a magnet carry?"},"content":{"rendered":"<header id=\"gb\" class=\"gb_sa gb_Za gb_Pe gb_Cc\" role=\"banner\">\n<div class=\"gb_7d\">\n<div class=\"gb_yc gb_wc gb_Cc\"><\/div>\n<\/div>\n<\/header>\n<div class=\"source-wrap\">\n<div class=\"input-full-height-wrapper tlid-input-full-height-wrapper\">\n<div class=\"source-input\">\n<div id=\"input-wrap\" class=\"tlid-input-area input-area less-padding\"><\/div>\n<div class=\"source-header\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"text-wrap tlid-copy-target\">\n<div class=\"ft-icon-txt\"><span class=\"tlid-translation translation\" lang=\"en\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-thumbnail wp-image-524\" src=\"https:\/\/blog.edu.turku.fi\/scienceed\/files\/2019\/12\/magnet-29094_960_720-150x150.png\" alt=\"\" width=\"150\" height=\"150\" \/>An experiment that contains both science and practical mathematics. Alex counted for 137 nails that stuck to the magnet and could certainly have counted longer if the nails in the box had not run out. Can all magnets hold the same number of things, or does it differ, and if so, why? Something to look into!<\/p>\n<p>If you like, you can start by:<\/span><\/div>\n<h2 class=\"ft-icon-txt\"><span class=\"tlid-translation translation\" lang=\"en\">Make your own magnet<\/span><\/h2>\n<div class=\"ft-icon-txt\"><span class=\"tlid-translation translation\" lang=\"en\">Take a magnet and stroke a needle several times (about 20 times needed) after the end of the magnet, but always in the same direction, not back and forth. Try picking up some metal with the needle \/ needle. Is it working? Then you have made a magnet that turns so that it has the north end towards the magnetic south pole and the south end towards the magnetic north pole.<\/p>\n<p>By pulling the magnet toward the needle, many of the iron atoms in the needle rotate so that their magnetic fields begin to interact. This causes the needle to start acting like a magnet.<\/span><\/div>\n<h2 class=\"ft-icon-txt\"><span class=\"tlid-translation translation\" lang=\"en\">How strong is your magnet?<\/span><\/h2>\n<ul>\n<li class=\"ft-icon-txt\"><span class=\"tlid-translation translation\" lang=\"en\">What can it pull?<\/span><\/li>\n<li class=\"ft-icon-txt\"><span class=\"tlid-translation translation\" lang=\"en\">How much can it lift?<\/span><\/li>\n<li class=\"ft-icon-txt\"><span class=\"tlid-translation translation\" lang=\"en\">How many train carriages can the magnet hold simultaneously in a long chain, before the chain is broken?<\/span><\/li>\n<li class=\"ft-icon-txt\"><span class=\"tlid-translation translation\" lang=\"en\">Can it make metal objects jump off the table?<\/span><\/li>\n<li class=\"ft-icon-txt\"><span class=\"tlid-translation translation\" lang=\"en\">How high in that case?<\/span><\/li>\n<\/ul>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>An experiment that contains both science and practical mathematics. Alex counted for 137 nails that stuck to the magnet and could certainly have counted longer if the nails in the box had not run out. Can all magnets hold the same number of things, or does it differ, and if so, why? Something to look &hellip; <a href=\"https:\/\/blog.edu.turku.fi\/scienceed\/2019\/12\/17\/how-much-can-a-magnet-carry\/\" class=\"more-link\">Forts\u00e4tt l\u00e4sa<span class=\"screen-reader-text\"> \u201dHow much can a magnet carry?\u201d<\/span><\/a><\/p>\n","protected":false},"author":2590,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30020],"tags":[],"class_list":["post-528","post","type-post","status-publish","format-standard","hentry","category-english"],"_links":{"self":[{"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/posts\/528","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/users\/2590"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/comments?post=528"}],"version-history":[{"count":1,"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/posts\/528\/revisions"}],"predecessor-version":[{"id":529,"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/posts\/528\/revisions\/529"}],"wp:attachment":[{"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/media?parent=528"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/categories?post=528"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.edu.turku.fi\/scienceed\/wp-json\/wp\/v2\/tags?post=528"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}