Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Medical
  • Give answer! An engine pumps water through a hose pipe . Water passes through the pipe and leaves it with a velocity of 2 m/s. The mass per unit length of water in the pipe is 100 kg/m. What is the power of the engine?

An engine pumps water through a hose pipe . Water passes through the pipe and leaves it with a velocity of 2 m/s. The mass per unit length of water in the pipe is 100 kg/m. What is the power of the engine?

  • Option 1)

    400 W

  • Option 2)

    200 W

  • Option 3)

    100 W

  • Option 4)

    800 W

 

Answers (1)

As discussed in

Power if the force is constant -

P=frac{dw}{dt}= P= vec{F}cdot vec{v}

- wherein

vec{F} ightarrow force

vec{v} ightarrow velocity

 

Mass per unit length of water, \mu = 100 kg/m

Velocity of water V= 2m/s

Power of the engine P = \mu v^{3} = (100)\times (2)^{3}

                                P = 800 W


Option 1)

400 W

This solution is incorrect

Option 2)

200 W

This solution is incorrect

Option 3)

100 W

This solution is incorrect

Option 4)

800 W

This solution is correct

Posted by

subam

View full answer

NEET 2024 Most scoring concepts

    Just Study 32% of the NEET syllabus and Score up to 100% marks

Similar Questions

Trending Articles/News

anam-khan

NTA re-opens NEET UG correction window 2024; update photographs till April 26
anam-khan

NEET UG 2024 exam city slip out at neet.ntaonline.in; over 25 lakh candidates to appear
anam-khan

NEET UG city intimation slip likely today at exams.nta.ac.in/NEET; barred item at exam centre

Latest Question