Physics
Water cannot be used to extinguish fire caused by electric current, because

It may spoil the wiring
It may cause hydrolysis
It may cause electrocution
It may cause electrolysis

ANSWER DOWNLOAD EXAMIANS APP

Physics
Should cars have bumpers that collapse under impact?

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

ANSWER DOWNLOAD EXAMIANS APP