تألمت فتعلمت فتغيرت

بوسى
منذ 7 سنوات
اجابة  0   مشاهدة  19

جسيم يتحرك بسرعة منتظمة  فى خط مستقيم تحت تاثير القوتين  \overline{ق1}\ \ =\ ا\ \overline{س\ }\ -\ 3\overline{ص}\ +\ \overline{ع\ }\ 4\ ,\ 2\overline{ق}\ =\ 6\ \overline{س}\ +\ ب\ \overline{ص}\ -\ جـ\ \overline{ع}   فان ا + ب + جـ = .......................

ا- 1

ب - -1

ج- 2

د- 7

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بوسى
منذ 7 سنوات
اجابة  0   مشاهدة  21

جسم كتلته 60 جم موضوع على نصد افقى  خشن ثم وصل  بخيط خفيف يمر على بكرة صغيرة ملساء 

عند حافة النضد وحمل فى طرفه جسما كتلته 38 جم يتدلى راسيا  فاذا تحركت المجموعة من السكون 

وقطعت مسافة 70 سم فى ثانية واحدة . احسب معامل الاحتكاك 

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بوسى
منذ 7 سنوات
اجابة  0   مشاهدة  19

اذا  اثرت القوتان   \overline{1ق}\ =\ \overline{س}\ +\ 5\ \overline{ص}\ +\ 7\ \overline{ع}\ ,\ \overline{2ق}\ =\ 2\ \overline{س}\ -\ \overline{ص}\ -\ 7\overline{ع} 

على جسيم لفترة زمنية قدرها  2 ثانية فان مقدار دفع  القوى  بوحدة النيوتن  ث يساوى ........................

ا- 5

ب- 10

ج- 25

د- 106

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بوسى
منذ 7 سنوات
اجابة  0   مشاهدة  9

اثرت قوة ثابتة   \overline{ق}  على جسيم بحيث كان متجه ازاحته يعطى كدالة فى الزمن  ن بالعلاقة 

\overline{ف}  = (3 ن2 + ن ) \overline{س} - 4ن  \overline{ص}  حيث \overline{س}\ ,\ \overline{ص}  متجها وحدة متعامدين  اوجد \overline{ق}  تساوى 165 

ارج / ث عندما  ن = 9 ثانية  علما بان ف مقيسة بالسنتمتر  , \overline{ق} مقيسة بالداين 

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بوسى
منذ 7 سنوات
اجابة  0   مشاهدة  13

اذا اثرت قوة متغيرة ق ( مقاسة بالنيوتن ) على جسيم حيث ق تعطى بالعلاقة ق = 4 ف3 فان 

الشغل المبذول من هذه القوة فى الفترة من ف = 0 الى ف = 2 متر يساوى ................................

ا- 16 ارج

ب- 16 جول 

ج- 32 ارج

د- 32 جول 

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بوسى
منذ 7 سنوات
اجابة  0   مشاهدة  10

جسيم يتحرك فى خط مستقيم  بحيث كانت عجلته  جـ تعطى كدالة فى الزمن  بالعلاقة جـ = 2 ن - 6

حيث جـ مقاسة م / ث2 , الزمن ن بالثانية  فان كان التغير فى كمية حركة الجسيم خلال الفترة 

3\leن\le5\     يساوى 32 كجم م/ث فاحسب كتلة الجسم 

 

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بوسى
منذ 7 سنوات
اجابة  0   مشاهدة  10

اذا كان ع = 3 ن2 - 2 ن  فان من خلال الفترة [ 0 , 2 ] تساوى ............... وحدة طول 

ا- 1

ب- 2

ج- 4

د- 10

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بوسى
منذ 7 سنوات
اجابة  0   مشاهدة  9

جسيم يتحرك فى خط مستقيم بحيث كانت ف = 3 هـن+2 فان سرعته الابتدائية تساوى ..............................

ا- 3

ب- هــ

ج- هـ2

د- 6هـ2

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Esraa
منذ 7 سنوات
اجابة  1   مشاهدة  139
جمله ليستنبط من انواع افادت .. ؟؟ ا/ التوكيد ب/ التنويع ج/ التعليل ء/ الترجيح
بوسى
منذ 7 سنوات
اجابة  0   مشاهدة  11

يلاقى كتلته 300 جم موضوع على ارتفاع  10 امتار من سطح الارض

اوجد طاقة وضع الجسم واذا سقط الجسم راسيا فاوجد طاقة حركته عندما

يكون على ارتفاع 3 امتار من سطح الارض 

 

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