{"id":3953,"date":"2023-01-09T10:41:36","date_gmt":"2023-01-09T10:41:36","guid":{"rendered":"https:\/\/8thclass.deltapublications.in\/?page_id=3953"},"modified":"2024-11-25T11:45:35","modified_gmt":"2024-11-25T11:45:35","slug":"s-11-i-pressure-exerted-by-liquids-and-gases","status":"publish","type":"page","link":"https:\/\/8thclass.deltapublications.in\/index.php\/s-11-i-pressure-exerted-by-liquids-and-gases\/","title":{"rendered":"s-11.i Pressure Exerted By Liquids And Gases"},"content":{"rendered":"\n

Pressure Exerted By Liquids And Gases<\/strong><\/h2>\n\n\n
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key notes:<\/p>\n\n\n\n

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Pressure in Liquids:<\/strong><\/p>\n\n\n\n

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  1. Pressure is the force applied on a surface per unit area. It is measured in Pascals (Pa), where 1 Pascal is equal to 1 Newton per square meter (1 Pa = 1 N\/m\u00b2).<\/li>\n<\/ol>\n\n\n\n

    2. Liquids exert pressure in all directions. This is because the weight of liquid molecules above a certain point causes pressure.<\/p>\n\n\n\n

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    1. Pressure in a liquid increases with depth. The deeper you go in a liquid, the higher the pressure due to the increased weight of the liquid above.<\/li>\n\n\n\n
    2. Pascal’s Principle: Pascal’s principle states that a change in pressure applied to an enclosed fluid is transmitted undiminished to all portions of the fluid and to the walls of its container.<\/li>\n<\/ol>\n\n\n\n

      Hydraulic Systems:<\/strong> <\/p>\n\n\n\n

      5. Hydraulic systems use the principle of transmitting pressure through liquids to amplify force. It’s commonly used in brakes, car lifts, and heavy machinery.<\/p>\n\n\n\n

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      1. In a hydraulic system, a small force applied to a small piston generates a larger force on a larger piston due to the transmission of pressure through the liquid.<\/li>\n<\/ol>\n\n\n\n

        Pressure in Gases:<\/strong><\/p>\n\n\n\n

        7. Gases also exert pressure, but unlike liquids, this pressure is due to the constant motion of gas molecules.<\/p>\n\n\n\n

          \n
        1. Boyle’s Law: Boyle’s law states that at constant temperature, the pressure of a gas is inversely proportional to its volume. P1V1 = P2V2, where P1 and V1 are initial pressure and volume, and P2 and V2 are final pressure and volume.<\/li>\n\n\n\n
        2. Charles’s Law: Charles’s law states that at constant pressure, the volume of a gas is directly proportional to its absolute temperature (in Kelvin). V1\/T1 = V2\/T2, where V1 and T1 are initial volume and temperature, and V2 and T2 are final volume and temperature.<\/li>\n<\/ol>\n\n\n\n

          Applications:<\/strong> <\/p>\n\n\n\n

          10. Understanding pressure in liquids and gases is crucial for various applications like scuba diving, weather forecasting, and designing hydraulic machines.<\/p>\n\n\n\n

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          1. Atmospheric pressure decreases with increasing altitude, which is why it’s harder to breathe at high altitudes.<\/li>\n<\/ol>\n\n\n\n

            Measuring Pressure:<\/strong><\/p>\n\n\n\n

            12. Pressure is measured using instruments like barometers for atmospheric pressure and manometers for pressure in closed systems.<\/p>\n\n\n\n

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            1. Common units for pressure include atmospheres (atm), millimeters of mercury (mmHg), and pounds per square inch (psi).<\/li>\n<\/ol>\n<\/div><\/div>\n\n\n\n

              Let’s practice!<\/strong><\/p>\n\n\n\n

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              Pressure Exerted By Liquids And Gases key notes: Pressure in Liquids: 2. Liquids exert pressure in all directions. This is because the weight of liquid molecules above a certain point causes pressure. Hydraulic Systems: 5. Hydraulic systems use the principle of transmitting pressure through liquids to amplify force. It’s commonly used in brakes, car lifts,Continue reading “s-11.i Pressure Exerted By Liquids And Gases”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-3953","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"_hostinger_reach_plugin_has_subscription_block":false,"_hostinger_reach_plugin_is_elementor":false,"_links":{"self":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3953","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/comments?post=3953"}],"version-history":[{"count":14,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3953\/revisions"}],"predecessor-version":[{"id":18986,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3953\/revisions\/18986"}],"wp:attachment":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=3953"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}