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Home Question Bank Physics Archive 2024 December 17

Physics Questions from Dec 17,2024

Browse the Physics Q&A Archive for Dec 17,2024, featuring a collection of homework questions and answers from this day. Find detailed solutions to enhance your understanding.

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5. What happens to the particles in a gas when it is cooled? \( \begin{array}{ll}\text { a) They move faster } & \text { (6) They move slow } \\ \text { c) They stay the same } & \text { d) They disappear }\end{array} \) In which state of matter are particles moving the fastest? \( \begin{array}{llll}\text { a) Solid } & \text { b) Liquid } & \text { C) Gas } & \text { d) Plasma }\end{array} \) Which state of matter fills the shape of its container but maintains and copper, both at \( 0^{\circ} \mathrm{C} \), are dropped together into a can of hot water. When the system has come to equilibrium, A. the aluminum and copper are at the same temperature. B. the aluminum is at a higher temperature than the copper. C. the copper is at a higher temperature than the aluminum. D. the difference in temperature between the aluminum and the copper depends on the E. the difference in temperature between the aluminum and the copper depends on the initial temperature of the water in the can. 11) A block is attached to a horizontal spring, whose force constant is \( 20.0 \mathrm{~N} / \mathrm{m} \). The block-spring system is undergoing simple harmonic motion with an amplitude of 6.00 cm . What is the total energy of the system, in Joules? A. 0.036 B. 0.045 C. 0.054 D. 0.063 E. 0.072 (3 puntos) La Figura 1 muestra un cubo de masa \( m \) deslizándose sin fricción a velocidad vo. Este experimenta una colisión perfectamente elástica con la punta inferior de una barra de longitud dy masa \( M=2 m \). La barra está pivotada alrededor de un eje sin fricción a través de su centro, e inicialmente cuelga recta hacia abajo en reposo. ¿Cuál es la velocidad del cubo, tanto en rapidez como en dirección, después de la colisión? 12 ORA PROVA TU In un numero da circo, un clown di mas- sa 58 kg e una scimmia camminano su un'asse sospesa fra due trampolini. L'asse può sopportare al massimo la pressione di \( 2,5 \times 10^{4} \mathrm{~Pa} \). Gli scarponi del clown hanno complessivamente una superficie di area \( 280 \mathrm{~cm}^{2} \). A un certo punto, la scimmietta sale in braccio al clown. Quale massa può avere al massimo la scimmia per non spezzare l'asse? \( \quad[13 \mathrm{~kg}] \) A baseball player throws a baseball when it is 7 ft above possible respect to the ground. The ball leaves his hand at an angle of \( 17^{\circ} \) with (a) Determine the parametric equations that model the path of the projectile. (b) Determine the rectangular equation that models the path of the projectile. (c) Determine approximately how long the projectile is in flight and the horizontal distance covered. A. \( x=\left(17 \cos 164^{\circ}\right) t, y=-16 t^{2}+\left(17 \sin 164^{\circ}\right) t+7 \) B. \( x=\left(17 \cos 7^{\circ}\right) t, y=-16 t^{2}+\left(17 \sin 7^{\circ}\right) t+164 \) C. \( x=\left(7 \cos 17^{\circ}\right) t, y=-16 t^{2}+\left(7 \sin 17^{\circ}\right) t+164 \) D. \( x=164 \cos \left(17^{\circ}\right) t, y=-16 t^{2}+164 \sin \left(17^{\circ}\right) t+7 \) Fat Michele va in bicicletta a trovare Roberto. Sta pedalando a \( 15 \mathrm{~km} / \mathrm{h} \) quando si accorge di essere vicino a casa di Roberto e, per vedere meglio i numeri civici, frena con un'accelerazione di - \( 0,57 \mathrm{~m} / \mathrm{s}^{2} \). Durante la frenata per- corre una distanza di \( 8,5 \mathrm{~m} \). Qual è la velocita finale di Michele? Quanto è durata la frenata? The distance between Earth and Jupiter is about \( 8.4 \times 10^{8} \), and you will travel to Jupiter in a super spaceship that can travel \( 2.1 \times 10^{4} \mathrm{~km} / \mathrm{h} \). How long will it take to get Jupiter? In one hour, a satellite orbiting the Earth travels \( 1.1 \times 10^{7} \mathrm{~m} \) (meters). Which of the following is the best way to rewrite this quantity, using more appropriate units?
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