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Thermodynamics and Perpetual Motion Quiz

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Thermodynamics and Perpetual Motion Quiz

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Questions and Answers

Which law of thermodynamics would a perpetual motion machine violate?

Zeroth law

First law

Second law (correct)

Third law

What is the primary reason why perpetual motion machines are impossible?

They violate the conservation of energy (correct)

They require an infinite energy source

They operate in an unperturbed system

They defy the laws of motion

What processes slowly dissipate the kinetic energy of celestial bodies, making their motion not perpetual?

Solar wind and interstellar medium resistance (correct)

Gravitational pull and magnetic fields

Solar flares and sunspots

Thermal convection and radioactive decay

Why will machines that extract energy from finite sources not operate indefinitely?

They are driven by the energy stored in the source, which will eventually be exhausted Signup and view all the answers

What is the ultimate source of energy for devices powered by ocean currents?

Solar energy Signup and view all the answers

What is the magnitude of the length covered by a moving object called?

Distance Signup and view all the answers

What is displacement in the context of motion?

Distance with direction Signup and view all the answers

Which term describes the motion of objects along a straight line and can be expressed through simple equations and graphs?

Rectilinear motion Signup and view all the answers

Can displacement be zero in a motion?

Yes, if the object moves in a straight line Signup and view all the answers

Which term refers to the magnitude of velocity without considering direction?

Speed Signup and view all the answers