2. Жасанды серік Жер бетінен 600 км биіктікте дөңгелек орбита бойымен айналуы үшін қандай жылдамды алуы керек? Оның айналу периоды қандай? [3]

Describe the law of conservation of momentum as it pertains to a real-life scenario, and explain how it applies. Begin by identifying the real-life scenario. You may start your response with: - A real-life scenario pertaining to conservation of momentum is ... - In this scenario, the law of conservation of energy applies because . . .

27. Two trains, 1 and 2 , have an equal mass of \( m=5,000 \mathrm{~kg} \) each. Train 1 is traveling with a speed \( n=15 \mathrm{~m} / \mathrm{s} \) before striking train 2 , which was at rest. If the two trains lock together as the result of the collision. What is their common speed immediately after collision?

3.33 • Uma canoa tem velocidade de \( 0,40 \mathrm{~m} / \mathrm{s} \) a sudeste em relação à Terra. A canoa se desloca em um rio que escoa a \( 0,50 \mathrm{~m} / \mathrm{s} \) para leste em relação à Terra. Determine o módulo, a direção e o sentido da velocidade da canoa em relação ao rio.

Q5. A charged particle with charge \( q \) enters a region of constant, uniform and mutually orthogonal fields \( \vec{E} \) and \( \vec{B} \) with a velocity \( \bar{v} \) perpendicular to both \( \vec{E} \) and \( \vec{B} \) and comes out without any charge in magnitude or directionof. Then (here \( \vec{E} \) is electric field and \( \vec{B} \) is magnetic field) இன்றுக்கொன்று செங்குத்தான,சாரா, மாறாத \( \vec{E} \) என்ற மின்புலம் மற்றும் \( \vec{B} \) என்ற காந்தப்புலத்தனன் வழியே \( q \) மின்னூட்டம் கொண்ட இரு துகளானது அதன் திசைவேகத்தின் எண் மதப்பு மற்றும் திசையில் எந்த மாற்றமும் இன்றி நுழைந்து வெளி வருகிறது எனில் பின்வருவனவற்றுள் எது சரி? \( \begin{array}{ll}\text { A. } \vec{B} \times \vec{E}=|\vec{E}|^{2} \vec{v} & \text { B. } \vec{E} \times \vec{B}=|\vec{B}|^{2} \vec{v} \\ \text { C. } \vec{B} \times \vec{E}=|\vec{B}|^{2} \vec{v} & \text { D. } \vec{E} \times \vec{B}=|\vec{E}|^{2} \vec{v}\end{array} \)

must be the charge of a Figure \( 23-40 \) shows a section of a \( R=3.00 \mathrm{~cm} \), with a charge per unit length of \( \lambda=2.00 \times 10^{-8} \mathrm{C} / \mathrm{m} \). What is the magnitude \( E \) of the electric field at radial distance (a) \( r=R / 2.00 \) and (b) \( r=2.00 R \) ? (c) Graph \( E \) versus \( r \) forthe range \( r=0 \) to 2.00R.