Physics
Should cars have bumpers that collapse under impact?

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
No, since the colliding car would then ram into the occupants and kill them
Yes, since they help to absorb the impact of a collision and keep the occupants safe

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Physics
Specific gravity is defined as the ratio of

Density of the substance to the density of water
Density of the substance to the density of water at 0°C
Density of water at 4°C to the density of the substance
Density of the substance to the density of water at 4°C

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Physics
Which of the following occurred first ?

Guglielmo Marconi sent out the first wireless signals
Albert Einstein propounded the General Theory of Relativity
Wright Brothers successfully flew an aircraft
Max Planck unveiled the Quantum Theory

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