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chap8 - Conservation of Energy Isolated vs Nonisolated...

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1 Conservation of Energy Isolated vs. Nonisolated Systems
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2 A block slides over a horizontal surface with friction. If the system is the block, this system is: Non - isolated I s olated N ot e nou g h i nf ormati. . 173 5 47 1. Non-isolated 2. Isolated 3. Not enough information to tell A block slides over a horizontal surface with friction. If the system is the block+plane, this system is: Non - isolated I s olated N ot e nou g h i nf ormati. . 13 12 204 1. Non-isolated 2. Isolated 3. Not enough information to tell
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3 Energy Transfer into a System The Isolated System: Conservation of Mechanical Energy Mechanical energy if conserved in an isolated system given that no non-conservative forces are acting.
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4 A rock of mass m is dropped from height h. A second rock, with mass 2m, is also dropped from h. When the second rock hits the ground, what is its kinetic energy? Four t i mes that of the ... Twice t hat of t he f i r st . . . Sam e as the f i rst ro c k ½ t ha t of the fi r st r ock ¼ t hat of t he sec ond ..
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