26-10-2008, 03:55 AM
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طالب جامعي
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تاريخ التسجيل: Jul 2008
المشاركات: 869
معدل تقييم المستوى: 16
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اقتباس:
المشاركة الأصلية كتبت بواسطة أرق ملاك
معلش ياستار هتعبك شوية
بس عندى سؤالين فيزيا مش عارفاهم
او تقدر تقول مش فاهماهم
1-suppose that the three fundamental standards of the metric system were length,density and time rather than length,mass and time . The standard of density in this system is to be defined as that of water . What consideration about water would you need to address to make sure that the standard of density is as accurate as possible
2- a sidewalk is to be constructed around a swimming pool that measures (10.0+/-0.1) m by (17.0 +/-0.1)m . If the sidewalk is to measure (1.00+/-0.01)m wide by (9.0+/-0.1)cm thick ,what volume of concrete is needed , and what is the approximate uncertainty of this volume?
معلش يا ستار تاعباك
ربنا يوفقك
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حرام عليكي ..... ايه ده....والله ماعرفهم....والأولي دي كمان اللي عايز يحط الكثافه بدل الكتله في النظام المتري...تبقي اسالي فيهم الدوك ....معلش ياارق ملاك مش هقدر اجاوبهملك
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