{"id":30880,"date":"2020-01-13T15:54:38","date_gmt":"2020-01-13T20:54:38","guid":{"rendered":"http:\/\/www.kaptest.com\/blog\/prep\/?p=30880"},"modified":"2020-09-11T20:40:11","modified_gmt":"2020-09-11T20:40:11","slug":"whats-tested-on-oat-physics","status":"publish","type":"post","link":"https:\/\/wpapp.kaptest.com\/study\/oat\/whats-tested-on-oat-physics\/","title":{"rendered":"What&#039;s Tested on OAT Physics?"},"content":{"rendered":"<p>The Physics section of the <a href=\"https:\/\/www.kaptest.com\/oat\">OAT<\/a> requires strong knowledge of testable concepts and equations, as well as strategic testing skills. You&#8217;ll need to comfortable with the following topics:<\/p>\n<ul>\n<li>Units, Vectors, and Kinematics<\/li>\n<li>Newtonian Mechanics<\/li>\n<li>Energy and Momentum<\/li>\n<li>Thermodynamics<\/li>\n<li>Fluid Statics<\/li>\n<li>Electrostatics<\/li>\n<li>Circuits<\/li>\n<li>Simple Harmonic Motion and Waves<\/li>\n<li>Light and Optics<\/li>\n<li>Modern Physics<\/li>\n<\/ul>\n<p>[ <b>RELATED:\u00a0<\/b><a href=\"http:\/\/www.kaptest.com\/blog\/prep\/oat\/creating-an-oat-study-schedule\/\">Creating an OAT Study Schedule<\/a> ]<br \/>\nTest your readiness for OAT Physics with the practice questions below:<br \/>\n\t<div   class='av_promobox  avia-button-no   avia-builder-el-0  el_before_av_toggle_container  avia-builder-el-first '>\t\t<div class='avia-promocontent'><p>\n<strong>Question 1<\/strong><br \/>\nAt a place where g is 9.8 m\/s\u00b2, an object is thrown vertically downward with a speed of 10 m\/s. Meanwhile, a different object is thrown vertically upward with a speed of 20 m\/s. Which object undergoes a greater change in speed in a time of two seconds?<\/p>\n<\/div><\/div><br \/>\n<div  class=\"togglecontainer   toggle_close_all  avia-builder-el-1  el_after_av_promobox  el_before_av_promobox \" >\n<section class=\"av_toggle_section\"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\"  >    <div role=\"tablist\" class=\"single_toggle\" data-tags=\"{All} \"  >        <p data-fake-id=\"#toggle-id-1\" class=\"toggler \"  itemprop=\"headline\"    role=\"tab\" tabindex=\"0\" aria-controls=\"toggle-id-1\">Answer 1<span class=\"toggle_icon\" >        <span class=\"vert_icon\"><\/span><span class=\"hor_icon\"><\/span><\/span><\/p>        <div id=\"toggle-id-1\" class=\"toggle_wrap \"  >            <div class=\"toggle_content invers-color \"  itemprop=\"text\"   ><p><strong>Each object undergoes the same change in speed.<\/strong> Each object experiences an acceleration of 9.8 m\/s\u00b2, which means that each object\u2019s speed changes by 9.8 m\/s each second. Both objects thus experience the same change in speed over the two-second period, i.e., 19.6 m\/s.<\/p>\n            <\/div>        <\/div>    <\/div><\/section>\n<\/div><br \/>\n\t<div   class='av_promobox  avia-button-no   avia-builder-el-2  el_after_av_toggle_container  el_before_av_toggle_container '>\t\t<div class='avia-promocontent'><p>\n<strong>Question 2<\/strong><br \/>\nA 2,000 kg experimental car can accelerate from zero to 30 m\/s in 6.3 s. What is the average power of the engine needed to achieve this acceleration?<\/p>\n<\/div><\/div><br \/>\n<div  class=\"togglecontainer   toggle_close_all  avia-builder-el-3  el_after_av_promobox  el_before_av_promobox \" >\n<section class=\"av_toggle_section\"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\"  >    <div role=\"tablist\" class=\"single_toggle\" data-tags=\"{All} \"  >        <p data-fake-id=\"#toggle-id-2\" class=\"toggler \"  itemprop=\"headline\"    role=\"tab\" tabindex=\"0\" aria-controls=\"toggle-id-2\">Answer 2<span class=\"toggle_icon\" >        <span class=\"vert_icon\"><\/span><span class=\"hor_icon\"><\/span><\/span><\/p>        <div id=\"toggle-id-2\" class=\"toggle_wrap \"  >            <div class=\"toggle_content invers-color \"  itemprop=\"text\"   ><p><strong>143 kW<\/strong>. The work done by the engine is equal to the change in kinetic energy of the car:<br \/>\n<img loading=\"lazy\" class=\"alignnone wp-image-30919 \" src=\"http:\/\/www.kaptest.com\/blog\/prep\/wp-content\/uploads\/sites\/21\/2020\/01\/Screen-Shot-2020-01-13-at-8.58.40-AM.png\" alt=\"oat physics\" width=\"196\" height=\"217\" \/><br \/>\nThe average power supplied is therefore equal to:<br \/>\n<img loading=\"lazy\" class=\"alignnone  wp-image-30920\" src=\"http:\/\/www.kaptest.com\/blog\/prep\/wp-content\/uploads\/sites\/21\/2020\/01\/Screen-Shot-2020-01-13-at-8.59.56-AM.png\" alt=\"oat physics\" width=\"131\" height=\"132\" \/><\/p>\n            <\/div>        <\/div>    <\/div><\/section>\n<\/div><br \/>\n\t<div   class='av_promobox  avia-button-no   avia-builder-el-4  el_after_av_toggle_container  el_before_av_toggle_container '>\t\t<div class='avia-promocontent'><p>\n<strong>Question 3<\/strong><br \/>\nIs there any difference between the temperature of an object and the total random kinetic energy of the molecules of the object?<\/p>\n<\/div><\/div><br \/>\n<div  class=\"togglecontainer   toggle_close_all  avia-builder-el-5  el_after_av_promobox  el_before_av_promobox \" >\n<section class=\"av_toggle_section\"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\"  >    <div role=\"tablist\" class=\"single_toggle\" data-tags=\"{All} \"  >        <p data-fake-id=\"#toggle-id-3\" class=\"toggler \"  itemprop=\"headline\"    role=\"tab\" tabindex=\"0\" aria-controls=\"toggle-id-3\">Answer 3<span class=\"toggle_icon\" >        <span class=\"vert_icon\"><\/span><span class=\"hor_icon\"><\/span><\/span><\/p>        <div id=\"toggle-id-3\" class=\"toggle_wrap \"  >            <div class=\"toggle_content invers-color \"  itemprop=\"text\"   ><p><strong>Yes.\u00a0<\/strong>The temperature measures the average random kinetic energy of each of the molecules of the substance but tells nothing about the total random kinetic energy of an object, which depends on the total number of particles in the object. Thus, it\u2019s possible to have an object (say a dilute gas) with a high temperature and low thermal energy content. However, if the number of gas particles is known, the total kinetic energy of the gas can then be calculated.<\/p>\n            <\/div>        <\/div>    <\/div><\/section>\n<\/div><br \/>\n\t<div   class='av_promobox  avia-button-no   avia-builder-el-6  el_after_av_toggle_container  el_before_av_toggle_container '>\t\t<div class='avia-promocontent'><p>\n<strong>Question 4<\/strong><br \/>\nA 10.0 \u03a9 resistor carries a current that varies as a function of time as shown below. What energy has been dissipated by the resistor after 5 s?<br \/>\n<img loading=\"lazy\" class=\"alignnone  wp-image-30924\" src=\"http:\/\/www.kaptest.com\/blog\/prep\/wp-content\/uploads\/sites\/21\/2020\/01\/Screen-Shot-2020-01-13-at-1.16.54-PM.png\" alt=\"oat physics\" width=\"468\" height=\"203\" \/><\/p>\n<\/div><\/div><br \/>\n<div  class=\"togglecontainer   toggle_close_all  avia-builder-el-7  el_after_av_promobox  el_before_av_promobox \" >\n<section class=\"av_toggle_section\"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\"  >    <div role=\"tablist\" class=\"single_toggle\" data-tags=\"{All} \"  >        <p data-fake-id=\"#toggle-id-4\" class=\"toggler \"  itemprop=\"headline\"    role=\"tab\" tabindex=\"0\" aria-controls=\"toggle-id-4\">Answer 4<span class=\"toggle_icon\" >        <span class=\"vert_icon\"><\/span><span class=\"hor_icon\"><\/span><\/span><\/p>        <div id=\"toggle-id-4\" class=\"toggle_wrap \"  >            <div class=\"toggle_content invers-color \"  itemprop=\"text\"   ><p><strong>120 J.\u00a0<\/strong><br \/>\nPower is energy dissipated per unit time, therefore energy dissipated is:<br \/>\n<em>E<\/em> = <em>Pt <\/em><br \/>\nThe power dissipated in a resistor <em>R<\/em> carrying a current <em>I<\/em> is:<br \/>\n<em>P = I\u00b2R<\/em><br \/>\nTherefore, the energy dissipated in the first 2 s is:<br \/>\n<em>E<\/em> = <em>I\u00b2Rt<\/em><br \/>\n= (2)\u00b2(10)(2)<br \/>\n= 80 J<br \/>\nThe energy dissipated in the next 2 s is zero, since there is no current, and therefore no power is dissipated. The energy dissipated during the one-second interval from <em>t<\/em> = 4 <em>s<\/em> to <em>t<\/em> = 5 <em>s<\/em> is:<br \/>\n<em>E<\/em> = <em>I\u00b2Rt <\/em><br \/>\n= (2)\u00b2(10)(1)<br \/>\n= 40 J<br \/>\nThe total energy dissipated is therefore:<br \/>\n80 + 40 = 120 J<\/p>\n            <\/div>        <\/div>    <\/div><\/section>\n<\/div><br \/>\n\t<div   class='av_promobox  avia-button-no   avia-builder-el-8  el_after_av_toggle_container  el_before_av_toggle_container '>\t\t<div class='avia-promocontent'><p>\n<strong>Question 5<\/strong><br \/>\nA camera is a device that can take a large object and reduce it to a much smaller image which fits on the film. Assume that the camera uses a single lens to produce a real image of an object, such that the object distance is much greater than the image distance. What type of lens, converging or diverging, should be used?<\/p>\n<\/div><\/div><br \/>\n<div  class=\"togglecontainer   toggle_close_all  avia-builder-el-9  el_after_av_promobox  el_before_av_sidebar \" >\n<section class=\"av_toggle_section\"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\"  >    <div role=\"tablist\" class=\"single_toggle\" data-tags=\"{All} \"  >        <p data-fake-id=\"#toggle-id-5\" class=\"toggler \"  itemprop=\"headline\"    role=\"tab\" tabindex=\"0\" aria-controls=\"toggle-id-5\">Answer 5<span class=\"toggle_icon\" >        <span class=\"vert_icon\"><\/span><span class=\"hor_icon\"><\/span><\/span><\/p>        <div id=\"toggle-id-5\" class=\"toggle_wrap \"  >            <div class=\"toggle_content invers-color \"  itemprop=\"text\"   ><p><strong>Converging.\u00a0<\/strong>To evaluate whether the lens is converging or diverging, determine the sign of the focal length. Positive focal lengths mean converging lenses, and negative focal lengths mean diverging lenses. Given that both <em>i<\/em> and <em>o<\/em> are positive, you have that 1\/<em>f<\/em> = 1\/<em>o<\/em> + 1\/<em>i<\/em> is positive, which says that f is positive. Thus, the lens is converging.<\/p>\n            <\/div>        <\/div>    <\/div><\/section>\n<\/div><br \/>\n&nbsp;<br \/>\n[\u00a0<strong>NEXT:\u00a0<strong>\u00a0<\/strong><\/strong><a href=\"https:\/\/www.kaptest.com\/study\/oat\/oat-survey-of-natural-sciences\/\">What&#8217;s Tested on the OAT Survey of Natural Sciences?<\/a><strong>\u00a0<\/strong>]<br \/>\n<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Physics section of the OAT requires strong knowledge of testable concepts and equations, as well as strategic testing skills. You&#8217;ll need to comfortable with the following topics: Units, Vectors, and Kinematics Newtonian Mechanics Energy and Momentum Thermodynamics Fluid Statics Electrostatics Circuits Simple Harmonic Motion and Waves Light and Optics Modern Physics [ RELATED:\u00a0Creating an [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":30926,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[27],"tags":[28,40,41],"_links":{"self":[{"href":"https:\/\/wpapp.kaptest.com\/study\/wp-json\/wp\/v2\/posts\/30880"}],"collection":[{"href":"https:\/\/wpapp.kaptest.com\/study\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wpapp.kaptest.com\/study\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wpapp.kaptest.com\/study\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wpapp.kaptest.com\/study\/wp-json\/wp\/v2\/comments?post=30880"}],"version-history":[{"count":1,"href":"https:\/\/wpapp.kaptest.com\/study\/wp-json\/wp\/v2\/posts\/30880\/revisions"}],"predecessor-version":[{"id":33891,"href":"https:\/\/wpapp.kaptest.com\/study\/wp-json\/wp\/v2\/posts\/30880\/revisions\/33891"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wpapp.kaptest.com\/study\/wp-json\/wp\/v2\/media\/30926"}],"wp:attachment":[{"href":"https:\/\/wpapp.kaptest.com\/study\/wp-json\/wp\/v2\/media?parent=30880"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpapp.kaptest.com\/study\/wp-json\/wp\/v2\/categories?post=30880"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpapp.kaptest.com\/study\/wp-json\/wp\/v2\/tags?post=30880"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}