Physics
Gasoline is useful in cars because it has

Gravitational potential energy
Electrical potential energy
Chemical potential energy
Kinetic energy

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Physics
Absolute Zero is defined as

At which liquid Helium boils
The temperature at which all molecular motion ceases
At which the volume becomes zero
At which water boils at 298K

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Physics
Should cars have bumpers that collapse under impact?

No, since the colliding car would then ram into the occupants and kill them
No, since it would be very expensive to get the car repaired
Yes, since the offending car should get damaged and pay for the mistake
Yes, since they help to absorb the impact of a collision and keep the occupants safe

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