Three balloons are inflated to the same size. The three balloons are submerged in buckets filled with ice water, tap water and w
2 answers:
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I added individual steps for clarity. Note that g must be positive if the solution is to be real.
Let me know if you have any questions.
Answer: The correct option is Option b.
Explanation:
Power is defined as the rate of work done by an object.
Mathematically,
.....(1)
And work done is the product of force exerted on the object times the displacement covered by that object.
Mathematically,
Putting this value in above equation, we get:
where,
P = power = ?W
F = Force exerted = 10N
s = Displacement = 400cm = 4m (Conversion factor: 1m = 100 cm)
t = Time taken = 8s
Putting values in above equation, we get
Hence, the correct option is Option b.