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Questions and Answers
Which law of thermodynamics would a perpetual motion machine violate?
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?
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?
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?
Why will machines that extract energy from finite sources not operate indefinitely?
What is the ultimate source of energy for devices powered by ocean currents?
What is the ultimate source of energy for devices powered by ocean currents?
What is the magnitude of the length covered by a moving object called?
What is the magnitude of the length covered by a moving object called?
What is displacement in the context of motion?
What is displacement in the context of motion?
Which term describes the motion of objects along a straight line and can be expressed through simple equations and graphs?
Which term describes the motion of objects along a straight line and can be expressed through simple equations and graphs?
Can displacement be zero in a motion?
Can displacement be zero in a motion?
Which term refers to the magnitude of velocity without considering direction?
Which term refers to the magnitude of velocity without considering direction?
