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Home Question Bank Physics Archive 2024 November 26

Physics Questions from Nov 26,2024

Browse the Physics Q&A Archive for Nov 26,2024, featuring a collection of homework questions and answers from this day. Find detailed solutions to enhance your understanding.

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20. Un gato de 3 kg , salta hacia adelante sobre una caja a una velocidad de \( 5 \mathrm{~m} / \mathrm{s} \). La caja sale disparada hacia atrás a \( 20 \mathrm{~m} / \mathrm{s} \). ¿Cuál es la masa de la placa? 8) What kind of collision, elastic or inelastic, occurs when a large fish swallows a small fish at rest? 13. En una escena de Avengers, Hulk de 1000 kg se impacta a \( 20 \mathrm{~m} / \mathrm{s} \) con Hulkbuster de 600 kg que lo encuentra en sentido opuesto a \( 30 \mathrm{~m} / \mathrm{s} \). Cuando se impactan quedan juntos. A qué velocidad quedan ambos. Recuerda que sentido opuesto es negativo. 7). Immediately after a slow-swimming large fish swallows a small fish at rest, does the momentum of the large fish change? Defend your answer. D) 0 El nivel de intensidad del sonido en de- cibeles \( (\mathrm{dB}) \) se define como la potencia acustica por unidad de area, y está dado por \( 1=10 \log \left(\frac{\mathrm{P}}{\mathrm{P}_{0}}\right) \), donde P intensidad so- nora, \( \mathrm{P}_{0}=10^{-12} \mathrm{~W} / \mathrm{m}^{2} \) umbral de audición, Renato se encuentra en una avenida de la ciudad de Lima donde el nivel de intensidad del sonido es de 50 dB . ¿Cuál es la intensidad sonora en ese punto? \( \begin{array}{ll}\text { A) } 10^{-7} \mathrm{~W} / \mathrm{m}^{2} & \text { B) } 10 \mathrm{~W} / \mathrm{m}^{2} \\ \text { C) } 10^{5} \mathrm{~W} / \mathrm{m}^{2} & \text { D) } 10^{-3} \mathrm{~W} / \mathrm{m}^{2} \\ \text { E) } 10^{-10} \mathrm{~W} / \mathrm{m}^{2} & \end{array} \) 6) If the equally massive railroad cars A and B stick together after an inelastic collision, how does their speed after the collision compare with the initial speed of car \( A \) ? 16. The IB physics data booklet gives two equations gives three equations for power. Use each to determine the SI fundamental equivalent units for power.a. Power = Force * Velocity 5) Rolling railroad car \( A \) makes a perfectly elastic collision with railroad car \( B \) of the same mass. After the collision, car \( A \) is at rest. How does the speed of car \( B \) compare with the initial speed of car \( A \) ? In which type or kind of collision is momentum conserved: elastic or inelastic? Describe the difference between elastic and inelastic collisions.
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