Question

pls answer this fast​

Answer 1

I think the answer is 125kw

Answer 2

To find :

The power delivered to the turbine

Given :

• Mass of water falling per second = 100 kg/s
• acceleration due to gravity = 10m/s²
• displacement = 120 m

Formula to be applied :

• Force = acceleration × mass
• work = Force × displacement
• power = Work / second

Solution :

Given, mass per second = 100 kg/s

acceleration due to gravity = 10 m/s²

hence, Force per second = mass × acceleration

$\implies \bold{ force \: ps \: = 100 \times 10} \\ \implies \boxed{ \boxed{ \bold{ force \: ps \: = 1000 \: n}}}</strong></p><p><strong>[tex] \implies \bold{ force \: ps \: = 100 \times 10} \\ \implies \boxed{ \boxed{ \bold{ force \: ps \: = 1000 \: n}}}$

Given, Force ps = 1000 N

displacement = 120 m

hence, work done = Displacement ×force

$\implies \bold{ work \: = 120 \times 1000} \\ \implies \boxed{ \boxed{ \bold{ \: work \: = 120000 \: j}}}$

hence, Work done = 120000 J

Given, Work done = 120000 J

The whole mass of water in 1 second will deliver the power to turbine in 1 second

hence, Time = 1 s

hence, Power delivered = work/time

$\implies \bold{ \: power \: = 120000 \div 1} \\ \implies \boxed{ \boxed { \bold{power = 120000 \: w}}}$

1 kW = 1000 W

hence, 120000 W = 120 kW

hence, the power delivered = 120 kW

hence, your answer is a) 120 kW

have a great day mate :)