{"id":2225,"date":"2023-10-02T11:09:43","date_gmt":"2023-10-02T11:09:43","guid":{"rendered":"http:\/\/localhost\/ecole9ja\/?p=2225"},"modified":"2023-10-02T11:23:36","modified_gmt":"2023-10-02T11:23:36","slug":"week-8-ss1-second-term-physics-notes","status":"publish","type":"post","link":"https:\/\/ecolebooks.com\/nigeria\/posts\/week-8-ss1-second-term-physics-notes\/","title":{"rendered":"Week 8 &#8211; SS1 Second Term Physics Notes"},"content":{"rendered":"<p>\u00a0<strong>WEEK 8<br \/>\n<\/strong><strong>TOPIC<\/strong>: <strong>FIELD \u2013 CONCEPT AND TYPES OF FIELD. GRAVITATIONAL AND MAGNETIC FIELD. FORCE OF GRAVITY<\/strong><br \/>\n\t\t<strong>CONTENT<\/strong><\/p>\n<ul>\n<li>\n<div><strong>Concept of Field<br \/>\n<\/strong><\/div>\n<\/li>\n<li>\n<div><strong>Types of Field<br \/>\n<\/strong><\/div>\n<\/li>\n<li>\n<div><strong>Gravitational Field<br \/>\n<\/strong><\/div>\n<p>\u00a0<\/li>\n<li>\n<div><strong>Concept of Field<br \/>\n<\/strong><\/div>\n<\/li>\n<\/ul>\n<p>Field can be defined as the region or space under the influence of some physical agency such as gravitational, electricity and magnetism.<\/p>\n<p>\u00a0<\/p>\n<ul>\n<li>\n<div><strong>Types of Field<br \/>\n<\/strong><\/div>\n<p>Fields are of various types namely: gravitational, magnetic and electric field.<\/p>\n<p>\u00a0<\/li>\n<li>\n<div><strong>Gravitational Field<br \/>\n<\/strong><\/div>\n<\/li>\n<\/ul>\n<p>Gravitational field is any region or space around a mass in which the gravitational force of the mass is felt.<\/p>\n<p>\u00a0If we throw up massive objects, it is our common observation that they move up to their highest points, stay stationary very briefly and eventually move downwards, falling faster and faster until they hit the ground level. The up and down movements objects on the earth&#8217;s surface are subject to the influence of the gravitational field.<\/p>\n<p>\u00a0Force of Gravity<br \/>\nThe force of gravity is the pull of attraction between the earth, itself and objects on or near it.<\/p>\n<p>\u00a0Newton&#8217;s Law of Universal Gravitation<br \/>\nNewton&#8217;s law of gravitation states that the force of attraction between two bodies of mass M<sub>1<\/sub> and M<sub>2<\/sub> is inversely proportional to the square of their distance R, between their centres and it is directly proportional to the product of their mass.<\/p>\n<p>\u00a0Mathematical expression<br \/>\n\u00a0\u00a0\u00a0\u00a0F \u03b1                      F =  <\/p>\n<p>\u00a0Where F is the gravitational force on either particle, M<sub>1<\/sub> and M<sub>2<\/sub> are their masses, R is the distance between them, and G is a universal gravitational constant, whose numerical value depends on the units in which the force, mass, and length are expressed.<\/p>\n<p>\u00a0Acceleration Due to Gravity<br \/>\nThe acceleration of objects due to the earth&#8217;s gravitational attraction is called the acceleration due to gravity. It is represented by the symbol g whose average value is about 9.81ms<sup>\u22122<\/sup>.<\/p>\n<p>\u00a0Without air resistance, different mass or objects released from rest at the same point will fall to the ground at the same time (free fall).<\/p>\n<p>\u00a0<strong>EVALUATION<br \/>\n<\/strong><\/p>\n<ol>\n<li>\n<div>Define field.\n<\/div>\n<\/li>\n<li>\n<div>State Newton&#8217;s law of gravitation.\n<\/div>\n<p>\u00a0Magnetic Field\n<\/li>\n<\/ol>\n<p>The region or space around a magnet in which the influence of the magnet can be felt or detected is called a magnetic field. If a white sheet of paper is placed over a magnet and iron fillings are sprinkled on the paper, it will be observed that the iron filings will arrange themselves in a definite pattern which illustrates the magnetic lines of force of the magnet. A similar pattern can be obtained by using the compass needle to plot the magnetic lines of force.<br \/>\n<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100223_1109_Week8SS1Se1.png\" alt=\"\"\/><\/p>\n<p>\u00a0<br \/>\n\u00a0<br \/>\n\u00a0<br \/>\n\u00a0<br \/>\n\u00a0<br \/>\n\u00a0<br \/>\n\u00a0<em>Fig 3.0 Magnetic Lines of Force Round a Bar Magnet<br \/>\n<\/em><br \/>\n\u00a0Lines of Force<br \/>\nA line of force is an imaginary line drawn in such a way that its direction at any point, that is the direction of the tangent, is the same as the direction of the field at that point.<\/p>\n<p>\u00a0<strong>EVALUATION<br \/>\n<\/strong><\/p>\n<ol>\n<li>\n<div>Define magnetic field.\n<\/div>\n<\/li>\n<li>\n<div>Define gravitational field.\n<\/div>\n<p>\u00a0\u00a0\u00a0\u00a0<br \/>\n<strong>Reading Assignment<br \/>\n<\/strong>New School Physics pg 67 &#8211; 70<\/p>\n<p>\u00a0<strong>WEEKEND ASSIGNMENT (THEORY)<br \/>\n<\/strong><\/li>\n<li>\n<div>Define A. gravitational field B. acceleration due to gravity. How does acceleration vary with latitude\n<\/div>\n<\/li>\n<li>\n<div>A. Explain what is meant by a field as used in physics. B. Mention three types of field known to you\n<\/div>\n<p>\t\t\t\t\u00a0<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>\u00a0WEEK 8 TOPIC: FIELD \u2013 CONCEPT AND TYPES OF FIELD. GRAVITATIONAL AND MAGNETIC FIELD. FORCE&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,191],"tags":[],"class_list":["post-2225","post","type-post","status-publish","format-standard","hentry","category-posts","category-second-term-ss1-physics"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/posts\/2225","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/comments?post=2225"}],"version-history":[{"count":1,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/posts\/2225\/revisions"}],"predecessor-version":[{"id":2226,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/posts\/2225\/revisions\/2226"}],"wp:attachment":[{"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/media?parent=2225"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/categories?post=2225"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/tags?post=2225"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}