{"id":12243,"date":"2016-01-30T04:45:29","date_gmt":"2016-01-30T03:45:29","guid":{"rendered":"https:\/\/kamerpower.com\/?p=12243"},"modified":"2025-01-29T20:44:48","modified_gmt":"2025-01-29T19:44:48","slug":"sujet-corrige-concours-ensp-yaounde-2014-chimie-et-physique","status":"publish","type":"post","link":"https:\/\/kamerpower.com\/fr\/sujet-corrige-concours-ensp-yaounde-2014-chimie-et-physique\/","title":{"rendered":"Sujet Corrige Concours ENSP Yaounde 2014 Chimie et Physique"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-69d509caae73a\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"ez-toc-cssicon\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #000000;color:#000000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #000000;color:#000000\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-69d509caae73a\"  aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/kamerpower.com\/fr\/sujet-corrige-concours-ensp-yaounde-2014-chimie-et-physique\/#sujet-corrige-concours-ensp-yaounde-2014-chimie-et-physique-ecole-nationale-polytechnique-de-yaounde\" >Sujet Corrige Concours ENSP Yaounde 2014 Chimie et Physique\u00a0Ecole Nationale Polytechnique de Yaound\u00e9<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/kamerpower.com\/fr\/sujet-corrige-concours-ensp-yaounde-2014-chimie-et-physique\/#-kamerpower-probleme-1\" >\u00a0Kamerpower Probl\u00e8me\u00a01<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/kamerpower.com\/fr\/sujet-corrige-concours-ensp-yaounde-2014-chimie-et-physique\/#kamerpower-solution-au-probleme-1\" >Kamerpower Solution au probl\u00e8me 1\u00a0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/kamerpower.com\/fr\/sujet-corrige-concours-ensp-yaounde-2014-chimie-et-physique\/#kamerpower-probleme-2-%e2%80%93-sujet-corrige-concours-ensp-yaounde-2014-chimie-et-physique\" >Kamerpower Probl\u00e8me\u00a02 &#8211;\u00a0Sujet Corrige Concours ENSP Yaounde 2014 Chimie et Physique<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/kamerpower.com\/fr\/sujet-corrige-concours-ensp-yaounde-2014-chimie-et-physique\/#solution-au-probleme-2-%e2%80%93-sujet-corrige-concours-ensp-yaounde-2014-chimie-et-physique\" >Solution au probl\u00e8me 2 &#8211;\u00a0Sujet Corrige Concours ENSP Yaounde 2014 Chimie et Physique<\/a><\/li><\/ul><\/nav><\/div>\n<h3 class=\"post-title single-title entry-title\" style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"sujet-corrige-concours-ensp-yaounde-2014-chimie-et-physique-ecole-nationale-polytechnique-de-yaounde\"><\/span><span style=\"color: #ff0000;\"><strong><a style=\"color: #ff0000;\" href=\"https:\/\/kamerpower.com\/fr\/epreuves-concours-polytechnique-cameroun-pdf\/\">Sujet Corrige Concours ENSP<\/a> Yaounde 2014 Chimie et Physique\u00a0Ecole Nationale Polytechnique de Yaound\u00e9<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<hr \/>\n<h3 class=\"post-title single-title entry-title\" style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"-kamerpower-probleme-1\"><\/span><strong>\u00a0<span style=\"color: #3366ff;\">Kamerpower Probl\u00e8me\u00a01<\/span><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Sujet Corrige Concours ENSP Yaounde<\/strong>: Trois charges \u00e9lectriques suppos\u00e9es ponctuelles, de m\u00eame valeur q&gt;0, sont plac\u00e9es aux trois sommets A, B et C d\u2019un carr\u00e9 de cot\u00e9 a. Elles sont maintenues fixes par un dispositif quelconque. kamerpower.com<\/span><\/p>\n<ol>\n<li style=\"text-align: justify;\"><span style=\"color: #000000;\">\u00a0D\u00e9terminez le champ \u00e9lectrique <span style=\"color: #ff0000;\">E<\/span>\u00a0 au quatri\u00e8me sommet <span style=\"color: #ff0000;\">D<\/span> du carr\u00e9.<\/span><\/li>\n<li style=\"text-align: justify;\"><span style=\"color: #000000;\">\u00a0On place en <span style=\"color: #ff0000;\">D<\/span> une charge inconnue <span style=\"color: #ff0000;\">Q<\/span>. Dans quelle direction se d\u00e9placera-t-elle\u00a0?<\/span><\/li>\n<li style=\"text-align: justify;\"><span style=\"color: #000000;\">\u00a0Quelle devrait \u00eatre la valeur d\u2019une charge q\u2019, plac\u00e9e en B \u00e0 la place de la charge q, pour que <span style=\"color: #ff0000;\">Q<\/span> reste immobile quelle que soit sa valeur\u00a0? (<span style=\"color: #ff0000;\">BD<\/span> est une <a style=\"color: #000000;\" href=\"https:\/\/kamerpower.com\/\">diagonale<\/a> du carr\u00e9. On n\u00e9gligera toute interaction entre les masses.)<\/span><\/li>\n<\/ol>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\">(Application num\u00e9rique\u00a0: q =5&#215;10<sup>-8<\/sup>C\u00a0\u00a0 )<\/span><\/p>\n<hr \/>\n<h3 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"kamerpower-solution-au-probleme-1\"><\/span><strong><span style=\"color: #ff0000;\">Kamerpower Solution au probl\u00e8me 1\u00a0<\/span><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"color: #000000;\">Champ <span style=\"color: #ff0000;\">E<\/span> au 4\u00e8me somme:<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-4488\" src=\"https:\/\/kamerpower.com\/wp-content\/uploads\/2014\/12\/Kamerpowers-Epreuve.png\" alt=\"Kamerpowers Epreuve\" width=\"231\" height=\"215\" \/><\/p>\n<p><span style=\"color: #000000;\">|| u || = 1 =&gt; u = \u00a0AB\/|| BD ||<\/span><\/p>\n<p><span style=\"color: #000000;\">Les champs cr\u00e9es par q<sub>a<\/sub> et q<sub>c<\/sub> sont \u00e9gaux et orthogonaux<\/span><\/p>\n<p><span style=\"color: #000000;\">E<sub>A<\/sub> + E<sub>C <\/sub>= \u00a0 \u00a0 (E<sub>A<\/sub>\/ cos45<sup>0<\/sup>)u \u00a0 =&gt; E<sub>A<\/sub> + E<sub>C <\/sub> = [((kq\u221a2)\/a<sup>2)<\/sup>]u<\/span><\/p>\n<p><span style=\"color: #000000;\">=&gt; E<sub>B<\/sub> = \u00a0(kq\/2a<sup>2<\/sup>)u<\/span><\/p>\n<p><span style=\"color: #000000;\">E = E<sub>A<\/sub> + E<sub>C<\/sub> + E<sub>B<\/sub>\u00a0= (2KQ\/a<sup>2<\/sup>)(1 + 2\u221a2)u<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\">Direction et d\u00e9placement de Q: \u00a0Q est soumise \u00e0 la force <em>F = qE<\/em> \u00a0\u00a0 direction droite (BD)<\/span><\/p>\n<p><span style=\"color: #000000;\">Si Q &gt; 0\u00a0: Sens de E\u00a0et\u00a0Si Q &lt; 0\u00a0: Sens de E\u00a0<\/span><\/p>\n<p><span style=\"color: #000000;\">Valeur de q&#8217; <em>F=0<\/em>\u00a0\u00a0, <em>B = 0\u00a0<\/em><\/span><\/p>\n<p><span style=\"color: #000000;\">Pour que Q soit immobile, il faut que F = 0, B = 0 \u00a0 \u00a0<\/span><\/p>\n<p><span style=\"color: #000000;\">E<sub>B<\/sub>\u00a0&#8211; (E<sub>A<\/sub> + E<sub>C<\/sub>) = (kq\u221a2\/a<sup>2<\/sup>)u<\/span><\/p>\n<p><span style=\"color: #000000;\"> (kq&#8217;\/2a<sup>2<\/sup>)u = (kq\u221a2\/a<sup>2<\/sup>)u =&gt; \u00a0q&#8217;\/2 = -q\u221a2 =&gt; q&#8217; = -2\u221a2q<\/span><\/p>\n<p><span style=\"color: #000000;\">q&#8217; = -1,41&#215;10<sup>-7<\/sup><span style=\"font-size: small;\">C<\/span><\/span><\/p>\n<h3 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"kamerpower-probleme-2-%e2%80%93-sujet-corrige-concours-ensp-yaounde-2014-chimie-et-physique\"><\/span><strong><span style=\"color: #3366ff;\">Kamerpower Probl\u00e8me\u00a02 &#8211;\u00a0<span style=\"color: #000000;\">Sujet Corrige Concours ENSP Yaounde 2014 Chimie et Physique<\/span><\/span><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\">Dans tout le probl\u00e8me on n\u00e9gligera la r\u00e9sistance de l\u2019air. Les quatre questions sont ind\u00e9pendantes.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"color: #3366ff;\">1)<\/span> Quel doit \u00eatre au d\u00e9part le module de la pouss\u00e9e <span style=\"color: #ff0000;\">p<\/span> (force verticale exerc\u00e9e par le moteur) pour qu\u2019une fus\u00e9e de masse totale <span style=\"color: #ff0000;\">M<\/span> s\u2019\u00e9l\u00e8ve verticalement avec une acc\u00e9l\u00e9ration de module\u00a0\u03b3?\u00a0<\/span><span style=\"color: #ff0000;\">\u00a0M=100 tonnes; \u03b3=8 m s<sup>-2<\/sup>; g = 10 m s<sup>-2<\/sup><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"color: #3366ff;\">2)<\/span> Cette fus\u00e9e place, \u00e0 l\u2019altitude <span style=\"color: #ff0000;\">h = 600 km<\/span>, un satellite artificiel de masse <span style=\"color: #ff0000;\">m = 2000 kg<\/span> sur une orbite circulaire ayant pour centre le centre de la terre.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\">Supposant que le satellite d\u00e9crit cette orbite \u00e0 une vitesse lin\u00e9aire de module <span style=\"color: #ff0000;\">v<\/span> constant, calculer (on notera <span style=\"color: #ff0000;\">Rt<\/span> le rayon terrestre)\u00a0:<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\">L\u2019acc\u00e9l\u00e9ration de la pesanteur \u00e0 l\u2019altitude h\u00a0;\u00a0La dur\u00e9e T d\u2019une r\u00e9volution.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #ff0000;\">Rt = 6400 km\u00a0; v = 7700 m s<sup>-1<\/sup><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"color: #3366ff;\">3)<\/span> L\u2019orbite est en r\u00e9alit\u00e9 elliptique et par l\u00e0 m\u00eame les lois du mouvement uniforme ne s\u2019appliquent plus. A l\u2019apog\u00e9e (point le plus \u00e9loign\u00e9 de la terre) l\u2019altitude est <span style=\"color: #ff0000;\">h<sub>1<\/sub><\/span><strong><sub>\u00a0,<\/sub>\u00a0<\/strong>au p\u00e9rig\u00e9e (point le plus rapproch\u00e9 de la terre), c\u2019est <span style=\"color: #ff0000;\">h<sub>2<\/sub><\/span>.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\">Quelle est la vitesse du satellite \u00e0 l\u2019apog\u00e9e, si elle vaut <span style=\"color: #ff0000;\">v = 770 m s<sup>-1<\/sup><\/span> au p\u00e9rig\u00e9e? (On supposera que l\u2019acc\u00e9l\u00e9ration <span style=\"color: #ff0000;\">g<sub>m<\/sub><\/span> reste constante tout au long de la trajectoire).\u00a0<\/span><span style=\"color: #ff0000;\">\u00a0h<sub>1<\/sub> = 900 km\u00a0; h<sub>2<\/sub> = 600 km\u00a0; g<sub>m<\/sub> = 8 m s<sup>-2<\/sup><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"color: #3366ff;\">4)<\/span> Une pile \u00e0 combustible embarqu\u00e9e transforme int\u00e9gralement de l\u2019\u00e9nergie chimique en \u00e9nergie \u00e9lectrique disponible pour la le satellite. Elle r\u00e9alise la synth\u00e8se de l\u2019eau. La production d\u2019une mole d\u2019eau fournit une \u00e9nergie <span style=\"color: #ff0000;\">W = 286 kJ<\/span>.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\">Calculez les masses d\u2019oxyg\u00e8ne et d\u2019hydrog\u00e8ne n\u00e9cessaires pour un vol orbital de <span style=\"color: #ff0000;\">N jours<\/span>, sachant que l\u2019appareil \u00e0 bord utilise une puissance moyenne <span style=\"color: #ff0000;\">P<\/span><strong>.\u00a0<\/strong><\/span><span style=\"color: #3366ff;\">N.B. ;\u00a0H = 1\u00a0; O = 16 \u00a0<\/span><span style=\"color: #ff0000;\">\u00a0N = 6 jours; P = 1 kW<\/span><\/p>\n<h3 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"solution-au-probleme-2-%e2%80%93-sujet-corrige-concours-ensp-yaounde-2014-chimie-et-physique\"><\/span><strong><span style=\"color: #ff0000;\">Solution au probl\u00e8me 2 &#8211;\u00a0<span style=\"color: #000000;\">Sujet Corrige Concours ENSP Yaounde 2014 Chimie et Physique<\/span><\/span><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"color: #000000;\"><span style=\"color: #3366ff;\">1)<\/span> La fus\u00e9e est soumise \u00e0 l\u2019action de deux forces verticales .<\/span><\/p>\n<p><span style=\"color: #000000;\">La pouss\u00e9e <em>p<\/em>\u00a0\u00a0verticale et le poids\u00a0 m . g<\/span><\/p>\n<p><span style=\"color: #000000;\">Selon le principe sur l\u2019axe vertical, on peut \u00e9crire\u00a0:<\/span><\/p>\n<p><span style=\"color: #000000;\">m \u03b3 = P \u2013 m.g \u00a0=&gt; \u00a0\u00a0\u00a0P = m (g + \u03b3)<\/span><\/p>\n<p><span style=\"color: #000000;\">P = 10<sup>5<\/sup>. (10 + 8) \u00a0 \u00a0 =\u00a0 1,8.10<sup>6<\/sup><\/span><\/p>\n<p style=\"text-align: right;\"><span style=\"color: #3366ff;\"><span style=\"text-decoration: underline;\">P = 1,8.10<\/span><sup>6<\/sup><\/span><\/p>\n<p><span style=\"color: #000000;\"><span style=\"color: #3366ff;\">2)<\/span>\u00a0Dans ce mouvement circulaire uniforme, l\u2019acc\u00e9l\u00e9ration centrip\u00e8te est<\/span> <span style=\"color: #ff0000;\">mg<\/span><span style=\"color: #000000;\"><strong>. <\/strong>\u00e9crire\u00a0:<\/span><\/p>\n<p><span style=\"color: #000000;\">m.g = m.v\u00b2\/(R<sub>t<\/sub>+h) \u00a0=&gt; g = v\u00b2\/(R<sub>t<\/sub>+h)<\/span><\/p>\n<p><span style=\"color: #000000;\">=&gt; g \u00a0= \u00a0770\u00b2\/(6,4&#215;10<sup>6<\/sup>+0,6&#215;10<sup>6<\/sup>)<\/span><\/p>\n<p><span style=\"color: #000000;\">=&gt; g = 8,47&#215;10^-2 m.s^-2<\/span><\/p>\n<p><span style=\"color: #000000;\">Le satellite effectue une r\u00e9volution compl\u00e8te en une dur\u00e9e T telle que\u00a0:<\/span><\/p>\n<p><span style=\"color: #000000;\">2\u03c0(R<sub>t<\/sub>+h) &#8211; vt \u00a0 =&gt; T = [2\u03c0\u00a0x\u00a0(R<sub>t<\/sub>+h)] \/v \u00a0=&gt; \u00a0T = [2\u03c0\u00a0x\u00a0(7.10<sup>6<\/sup>)] \/7,7.10<sup>2<\/sup> <\/span>=\u00a0<span style=\"color: #ff0000;\">57100 s<\/span><\/p>\n<p style=\"text-align: right;\"><span style=\"color: #3366ff;\">T \u00a0= \u00a057100 s<\/span><\/p>\n<p><span style=\"color: #000000;\"><span style=\"color: #3366ff;\">3)<\/span> La conservation de l\u2019\u00e9nergie m\u00e9canique du satellite au cours du temps, et notamment entre l\u2019apog\u00e9e et le p\u00e9rig\u00e9e, permet d\u2019\u00e9crire\u00a0:\u00a0<\/span><\/p>\n<p><span style=\"color: #000000;\">(1\/2)m\u00b2<sub>apogee<\/sub>\u00a0+ mg (h<sub>2<\/sub>\u00a0&#8211; h<sub>1<\/sub>) = (1\/2)mv\u00b2<sub>perigee<\/sub><\/span><\/p>\n<p><span style=\"color: #000000;\">v\u00b2<sub>apogee<\/sub> = v\u00b2<sub>perigee<\/sub>\u00a0&#8211; 2g (h<sub>2<\/sub>\u00a0&#8211; h<sub>1<\/sub>)<\/span><\/p>\n<p><span style=\"color: #000000;\">v\u00b2<sub>apogee<\/sub> = (7,7&#215;10^6)\u00b2 \u00a0&#8211; \u00a02x8x (9-6) x 10^5<\/span><\/p>\n<p><span style=\"color: #000000;\">v\u00b2<sub>apogee<\/sub><span style=\"font-size: small;\">\u00a0 = 4,2&#215;10\u00b2ms<\/span><\/span><\/p>\n<p><span style=\"color: #000000;\"><span style=\"color: #3366ff;\">4)<\/span> l\u2019\u00e9nergie n\u00e9cessaire pour 6 jours est\u00a0<span style=\"color: #ff0000;\">\u00a0E = P.t ,\u00a0<\/span>La quantit\u00e9 d\u2019eau n\u00e9cessaire est, en mole<\/span><\/p>\n<p><span style=\"color: #000000;\">n = E\/W \u00a0= (P.t\/W)<\/span><\/p>\n<p><span style=\"color: #000000;\">Une mole d\u2019eau contient <span style=\"color: #ff0000;\">2g<\/span> d\u2019hydrog\u00e8ne et <span style=\"color: #ff0000;\">16g<\/span> d\u2019oxyg\u00e8ne.<\/span><\/p>\n<p><span style=\"color: #3366ff;\">Masse de <span style=\"color: #ff0000;\">O<sub>2<\/sub><\/span> = 16 .\u00a0n \u00a0=&gt; \u00a0Masse de <span style=\"color: #ff0000;\">O<sub>2 <\/sub><\/span>= 29 kg<strong>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0<\/strong><\/span><\/p>\n<p><span style=\"color: #3366ff;\"><span style=\"color: #000000;\">et<\/span> \u00a0Masse de <span style=\"color: #ff0000;\">H<sub>2<\/sub><\/span> = 2 . n \u00a0 =&gt; \u00a0Masse de <span style=\"color: #ff0000;\">H<\/span><sub><span style=\"color: #ff0000;\">2<\/span>\u00a0 <\/sub>=\u00a0 3,63 kg.<\/span><\/p>\n<p class=\"post-title single-title entry-title\" style=\"text-align: center;\"><span style=\"color: #3366ff;\"><strong>Sujet Corrige <a style=\"color: #3366ff;\" href=\"https:\/\/kamerpower.com\/fr\/concours-ensp-2015-ouverture-concours-dentree-en-premiere-annee-du-cycle-des-ingenieurs-de-conception-universite-de-yaounde-1\/\">Concours ENSP<\/a> Yaounde 2014 Chimie et Physique\u00a0Ecole Nationale Polytechnique de Yaound\u00e9<\/strong><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-5914 size-full\" src=\"https:\/\/kamerpower.com\/wp-content\/uploads\/2015\/05\/LogoENSP.jpg\" alt=\"ENSP Concours R\u00e9vision Cameroun\" width=\"1280\" height=\"720\" srcset=\"https:\/\/kamerpower.com\/wp-content\/uploads\/2015\/05\/LogoENSP.jpg 1280w, https:\/\/kamerpower.com\/wp-content\/uploads\/2015\/05\/LogoENSP-600x338.jpg 600w, https:\/\/kamerpower.com\/wp-content\/uploads\/2015\/05\/LogoENSP-300x169.jpg 300w, https:\/\/kamerpower.com\/wp-content\/uploads\/2015\/05\/LogoENSP-768x432.jpg 768w, https:\/\/kamerpower.com\/wp-content\/uploads\/2015\/05\/LogoENSP-720x405.jpg 720w, https:\/\/kamerpower.com\/wp-content\/uploads\/2015\/05\/LogoENSP-520x293.jpg 520w, https:\/\/kamerpower.com\/wp-content\/uploads\/2015\/05\/LogoENSP-320x180.jpg 320w, https:\/\/kamerpower.com\/wp-content\/uploads\/2015\/05\/LogoENSP-150x84.jpg 150w, https:\/\/kamerpower.com\/wp-content\/uploads\/2015\/05\/LogoENSP-1200x675.jpg 1200w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":5914,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_themeisle_gutenberg_block_has_review":false,"footnotes":""},"categories":[1701],"tags":[1712,1727,2078],"class_list":["post-12243","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-epreuves","tag-epreuve-de-concours-dentree-aux-grandes-ecoles-cameroun","tag-epreuve-ensp-concours-cameroun","tag-sujets-corrigees-concours-ensp-yaounde-polytechnique"],"_links":{"self":[{"href":"https:\/\/kamerpower.com\/fr\/wp-json\/wp\/v2\/posts\/12243","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kamerpower.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kamerpower.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kamerpower.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kamerpower.com\/fr\/wp-json\/wp\/v2\/comments?post=12243"}],"version-history":[{"count":3,"href":"https:\/\/kamerpower.com\/fr\/wp-json\/wp\/v2\/posts\/12243\/revisions"}],"predecessor-version":[{"id":67820,"href":"https:\/\/kamerpower.com\/fr\/wp-json\/wp\/v2\/posts\/12243\/revisions\/67820"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kamerpower.com\/fr\/wp-json\/wp\/v2\/media\/5914"}],"wp:attachment":[{"href":"https:\/\/kamerpower.com\/fr\/wp-json\/wp\/v2\/media?parent=12243"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kamerpower.com\/fr\/wp-json\/wp\/v2\/categories?post=12243"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kamerpower.com\/fr\/wp-json\/wp\/v2\/tags?post=12243"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}