{"id":203433,"date":"2025-03-19T18:17:17","date_gmt":"2025-03-19T18:17:17","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=203433"},"modified":"2025-03-19T18:17:19","modified_gmt":"2025-03-19T18:17:19","slug":"you-have-a-clock-with-a-second-hand-a-ruler-marked-in-millimeters","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/03\/19\/you-have-a-clock-with-a-second-hand-a-ruler-marked-in-millimeters\/","title":{"rendered":"You have a clock with a second hand, a ruler marked in millimeters"},"content":{"rendered":"\n

You have a clock with a second hand, a ruler marked in millimeters, a graduated cylinder marked in milliliters, and scales sensitive to 1 mg. How would you measure the mass of a drop of water? How would you measure the period of a swing? How would you measure the volume of a paper clip? How can you improve the accuracy of your measurements? Write the procedures clearly so that a partner can follow them and obtain reasonable results.<\/p>\n\n\n\n

The correct answer and explanation is :<\/strong><\/mark><\/p>\n\n\n\n

Measuring the Mass of a Drop of Water<\/h3>\n\n\n\n
    \n
  1. Place an empty container (such as a small dish) on the scales and record its mass.<\/li>\n\n\n\n
  2. Use a dropper to carefully add a single drop of water to the container.<\/li>\n\n\n\n
  3. Record the new mass of the container with the drop of water.<\/li>\n\n\n\n
  4. Subtract the initial mass from the final mass to determine the mass of the drop.<\/li>\n\n\n\n
  5. Repeat the process multiple times and calculate the average mass for accuracy.<\/li>\n<\/ol>\n\n\n\n

    Measuring the Period of a Swing<\/h3>\n\n\n\n
      \n
    1. Pull the swing back to a fixed starting position and release it without pushing.<\/li>\n\n\n\n
    2. Use the clock to measure the time taken for one full oscillation (from one extreme to the other and back).<\/li>\n\n\n\n
    3. Since a single swing may be too quick to measure accurately, time ten complete swings and record the total time.<\/li>\n\n\n\n
    4. Divide the total time by ten to obtain the period of one oscillation.<\/li>\n\n\n\n
    5. Repeat the measurement several times and calculate the average period for accuracy.<\/li>\n<\/ol>\n\n\n\n

      Measuring the Volume of a Paper Clip<\/h3>\n\n\n\n
        \n
      1. Fill the graduated cylinder with water to a known level and record the initial volume.<\/li>\n\n\n\n
      2. Drop the paper clip into the water, ensuring no splashing.<\/li>\n\n\n\n
      3. Record the new water level.<\/li>\n\n\n\n
      4. Subtract the initial volume from the final volume to find the volume of the paper clip.<\/li>\n\n\n\n
      5. Repeat the process with multiple paper clips and calculate the average volume for better accuracy.<\/li>\n<\/ol>\n\n\n\n

        Improving Accuracy<\/h3>\n\n\n\n
          \n
        • Use multiple trials and calculate the average.<\/li>\n\n\n\n
        • Ensure measurements are taken at eye level to prevent parallax errors.<\/li>\n\n\n\n
        • Use the most precise instrument available for each measurement.<\/li>\n\n\n\n
        • Reduce external factors such as air currents and vibrations when measuring mass.<\/li>\n\n\n\n
        • Ensure water adheres to the dropper consistently when measuring drops.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

          You have a clock with a second hand, a ruler marked in millimeters, a graduated cylinder marked in milliliters, and scales sensitive to 1 mg. How would you measure the mass of a drop of water? How would you measure the period of a swing? How would you measure the volume of a paper clip? […]<\/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-203433","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/203433","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=203433"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/203433\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=203433"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=203433"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=203433"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}