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In: Physics

For the following situations given the system described, which of the quantities listed should be zero?...

For the following situations given the system described, which of the quantities listed should be zero? For those that are not zero, provide its sign. (External work, change in kinetic energy, change in gravitational potential energy, change in elastic potential energy, change in thermal energy)

a. System: Ice skater. Situation: (Initial state = Ice skater at rest on ice, final state: ice skater at high speed on the ice)

b. System: Ice skater + ice rink. Situation: (Initial state = Ice skater at rest on ice, final state: ice skater at high speed on the ice)

c. System: Earth + comet. Situation: (Initial state = comet is far from earth, final state = comet has fallen to Earth, right before it impacts the ground)

d. System: Earth + hanging spring with mass attached. Situation: (Initial state = mass at rest at equilibrium position, final state = mass at rest with spring fully compressed)

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Expert Solution

genius_generous answered 2 years ago
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