A parachute attains a terminal velocity when
...A parachute attains a terminal velocity when
its density is equal to the density of air
the viscous force of the air and the upthrust completely counteract its weight
it expands as a result of reduced external pressure
the viscous force of the air is equal to the sum of the weight and upthrust
Correct answer is B
No explanation has been provided for this answer.
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