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Home Question Bank Physics Archive 2024 December 07

Physics Questions from Dec 07,2024

Browse the Physics Q&A Archive for Dec 07,2024, featuring a collection of homework questions and answers from this day. Find detailed solutions to enhance your understanding.

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A thin stream of water flows smoothly from a faucet and falls straight down. At one point, the water is flowing at a speed of \( \mathrm{E}_{0} \) What is the vertical distance \( h \) between these two points? Desde una superficie horizontal se lanza un cuerpo con una rapidez de \( 50 \mathrm{~m} / \mathrm{s} \) con un ángulo de \( 53^{\circ} \). Hallar el tiempo de vuelo y la altura \( \left(g=10 \mathrm{~m} / \mathrm{s}^{2}\right) \). The oil in an automobile is used to lubricate internal engine parts and keep these parts clean. Oil can be subjected to temperature differences as high as \( \Delta T=312{ }^{\circ} \mathrm{F} \), especially when it is near the combustion chamber. Derive an expression to convert this difference into degrees Celsius, and use that expression to find the value of \( \Delta T_{\mathrm{C}} \) in degrees Celsius. 2. Heat transfer stops after a while between two mixed substances with different temperatures 3. If you pour a cup of water with temperature \( 30^{\circ} \mathrm{C} \) to another cup of water with temperature \( 80^{\circ} \mathrm{C} \). the final temperature of the mixture may be \( \begin{array}{llll}\text { a. } 80^{\circ} \mathrm{C} & \text { d. } 30^{\circ} \mathrm{C} & \text { C. } 50^{\circ} \mathrm{C} & \text { d. } 110^{\circ} \mathrm{C}\end{array} \) 4................occurs when heat transfer stops between two objects as they reach the same temperature. \( \begin{array}{llll}\text { a. Calorie } & \text { b. Heat flow } & \text { c. Sound equilibrium } & \text { d. Thermal equilibrium }\end{array} \) 12. The mass of a density bottle of volume \( 50 \mathrm{~cm}^{3} \) is 10.0 g when empty. Aluminium turnings are poured into the bottle and the total mass is 60.0 g . Water is then added into the turnings till the bottle is full. If the total mass of the bottle and its coatents is 90.0 g . calculate the density of the aluminium turnings. (3 \( \mathbf{m k} \) ) 1) Write the scientific term of each of the following: 1. They are materials that allow thermal energy to transfer through. ¿Qué ley afirma que una corriente eléctrica logra generar un campo magnético cuando se provoca el desplazamiento de los electrones? 26 In giostra! Due bambini stanno ruotando sulla giostra mostrata in figura. Il bambino 1 si trova a \( 2,0 \mathrm{~m} \) dall'asse di rotazione, il bambino 2 a \( 1,5 \mathrm{~m} \) dall'asse. Se la giostra compie un giro ogni \( 4,5 \mathrm{~s} \), determina il modulo della velocità ango- lare e il modulo della velocità lineare di ciascun bambino. In giostra! Due bambini stanno ruotando sulla giostra mostrata is figura. Il bambino 1 si trova a \( 2,0 \mathrm{~m} \) dall'asse di rotarione il bambino 2 a \( 1,5 \mathrm{~m} \) dall'asse. Se la giostra compic giro ogni \( 4,5 \mathrm{~s} \), determina il modulo della velocità ang
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