اسئلة بخصوص الفيزياء
 

السلام عليكم
احتاج مساعدتكم في بعض الاسئلة
الله يسعدكم لا تردوني خايبة:mommy_cut:

اسئلتي هي :
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1. What differential equation describes the motion of a mass on a spring?

a) de/dt+kx=O b) d^2 e/dt^2+x=O c) d^2 e/dt^2+ k/mx=O d) d^2 e/dt^2+mx=O

2. The amplitude of a damped system

a) Decreases exponentially c) Increases exponentially

b) Decreases linearl d) Remains constant

3. For a constant mass pendulum, doubling the length of the cord ...................., the period of oscillation

4. The number of waves that pass a point each second is called.....................4
5. A fully constrictive interference occurs when l/y = ................5
حيث y=الطول الموجي " لمبدا"


:baa_cut: