{"id":190867,"date":"2025-02-13T09:55:18","date_gmt":"2025-02-13T09:55:18","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=190867"},"modified":"2025-02-13T09:55:20","modified_gmt":"2025-02-13T09:55:20","slug":"convert-the-speed-of-light-2-99-x-10m-s-to-km-day-also-mph","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/02\/13\/convert-the-speed-of-light-2-99-x-10m-s-to-km-day-also-mph\/","title":{"rendered":"Convert the speed of light, 2.99 x 10m\/s, to km\/day also mph"},"content":{"rendered":"\n

Convert the speed of light, 2.99 x 10m\/s, to km\/day also mph. If the Sun is 93 million miles away, how long will it take light to cover that distance?<\/p>\n\n\n\n

The Correct Answer and Explanation is :<\/strong><\/mark><\/p>\n\n\n\n

Correct Answers:<\/h3>\n\n\n\n
    \n
  1. Speed of Light in Kilometers per Day<\/strong>:
    ( 2.58 \\times 10^{10} ) km\/day (25,833,600,000 km\/day)<\/li>\n\n\n\n
  2. Speed of Light in Miles per Hour (mph)<\/strong>:
    668,845,614 mph<\/li>\n\n\n\n
  3. Time for Light to Travel from the Sun to Earth<\/strong>:
    500.56 seconds<\/strong> (approximately 8 minutes and 20.56 seconds<\/strong>)<\/li>\n<\/ol>\n\n\n\n
    \n\n\n\n

    Explanation:<\/h3>\n\n\n\n

    The speed of light in a vacuum is approximately ( 2.99 \\times 10^8 ) meters per second<\/strong>. To convert this into different units:<\/p>\n\n\n\n

      \n
    1. Converting to Kilometers per Day:<\/strong><\/li>\n<\/ol>\n\n\n\n
        \n
      • Since 1 kilometer = 1000 meters<\/strong>, we divide by 1000 to get km\/s.<\/li>\n\n\n\n
      • There are 86,400 seconds in a day<\/strong> (( 24 \\times 60 \\times 60 )).<\/li>\n\n\n\n
      • Multiplying, we get:
        [
        \\left( \\frac{2.99 \\times 10^8}{1000} \\right) \\times 86,400 = 2.58 \\times 10^{10} \\text{ km\/day}
        ]<\/li>\n<\/ul>\n\n\n\n
          \n
        1. Converting to Miles per Hour (mph):<\/strong><\/li>\n<\/ol>\n\n\n\n
            \n
          • Since 1 mile = 1609.34 meters<\/strong>, we divide by 1609.34 to get miles per second.<\/li>\n\n\n\n
          • There are 3600 seconds in an hour<\/strong> (( 60 \\times 60 )).<\/li>\n\n\n\n
          • Multiplying, we get:
            [
            \\left( \\frac{2.99 \\times 10^8}{1609.34} \\right) \\times 3600 = 668,845,614 \\text{ mph}
            ]<\/li>\n<\/ul>\n\n\n\n
              \n
            1. Time for Light to Travel from the Sun to Earth:<\/strong><\/li>\n<\/ol>\n\n\n\n
                \n
              • The average distance from the Sun to Earth<\/strong> is 93 million miles<\/strong>.<\/li>\n\n\n\n
              • Using the formula Time = Distance \/ Speed<\/strong>, we divide:
                [
                \\frac{93,000,000}{668,845,614} \\times 3600 \\approx 500.56 \\text{ seconds}
                ]<\/li>\n\n\n\n
              • Converting to minutes, we divide by 60<\/strong>, giving 8 minutes and 20.56 seconds<\/strong>.<\/li>\n<\/ul>\n\n\n\n

                This confirms why we often say it takes about 8 minutes for sunlight to reach Earth<\/strong>.<\/p>\n","protected":false},"excerpt":{"rendered":"

                Convert the speed of light, 2.99 x 10m\/s, to km\/day also mph. If the Sun is 93 million miles away, how long will it take light to cover that distance? The Correct Answer and Explanation is : Correct Answers: Explanation: The speed of light in a vacuum is approximately ( 2.99 \\times 10^8 ) meters […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-190867","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/190867","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=190867"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/190867\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=190867"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=190867"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=190867"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}