* :An isolated system

Q: By using a simple and practical example, explain that based on the choice of one's system of study,…

A: When a force acting on a body displaces it over a certain distance, work is said to be done. Work is…

Q: You place an ice cube in a microwave oven. If it requires 32,195 J to melt the ice cube and the oven…

A: The equation for the power delivered to the microwave oven. P = Q/t the power is directly…

Q: When a hybrid car brakes to a stop, much of its kinetic energy is transformed to A. Heat B. Work C.…

A: The correct option is (C) Explanation- whenever car stops the car use friction brakes which inhibit…

Q: If friction takes energy away from a system where could it go? a) sound b) raise the temperature…

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Q: What is the most accurate geometric description of projba? Oa. The length of the portion of the…

A: Projection of B along A is shown as projBA. This is best convened by option C i. e. shadow of B…

Q: ball is thrown horizontally off of a building with initial speed vo. Describe the graph of kinetic…

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Q: Two children are trying to shoot a marble of mass m into a small box using a spring-loaded gun that…

A: Solution:Given:m = mass of marblek = spring constantH = height of edge of table above groundd =…

Q: please refer to the attached picture. Calculate the velocity, KE and PE at all heights/locations…

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Q: 12. A high diver leaves the end of a 5.0 meter high diving board and strikes the water 1.3 seconds…

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Q: Problem 12 A bucket that weighs 4.4 pounds and a rope of negligible weight are used to draw water…

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Q: Determine the potential energy of water contained in a lake, if the lake volume is 2m3 and its water…

A: Volume of lake V = 2 m3  Density of water D = 1000 kg/m3  height of water h = 60 m  We need to…

Q: Problem 2  A rectangular tank that is 88 feet long, 33 feet wide, and 1515 feet tall is filled with…

A: The given values are,

Q: The blade on a snowplow turns the wet snow through an angle of 120∘ but off to one side at 30∘. If…

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Q: Practice 1. A plane makes the following displacements: Ad, = 72.0 km [W 30.0° S], Ad = 48.0 km [S],…

A: Given: The total time is 2.5 h. ∆d1=72 kmW 30° S∆d2=48 kmS∆d3=150 kmW

Q: Unstretched AL spring m The block hanging at rest has stretched Fa the spring by AL.

A: The block is hanging at rest has stretched the spring by ∆L

Q: What is the mechanical energy formula? How do you calculate mechanical energy when only kinetic…

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Q: 8. Michaela and Carlee decide to rob the school of the Presentation Night loot on roller skates.…

A: Given data :  Mass of the bag (m) = 12kg Mass of michaela (m') = 58kg Initial speed of the bag (v) =…

Q: 3. In Energy Skate Park phet simulation, you could take measurements to calculate the initial…

A: Initially when the skater is at the top is at rest. Then, initial mechanical energy of the skater =…