| ⇦ | 
| ⇨ |
An engine pumps water continuously through a hose. Water leaves the hose with a velocity v and m is the mass per unit length of the water jet. What is the rate of at which kinetic energy is imparted to water?
Options
(a) mv²
(b) 1/2 mv²
(c) 1/2 m²v²
(d) 1/2 mv³
Correct Answer:
1/2 mv³
Explanation:
m : mass per unit length
rate of mass leaving the the hose per sec
= mx / t = mv.
Rate of K.E. = 1/2 (mv)v² = 1/2 mv³
Related Questions: - An electric motor operating on a 60 volt D.C supply draws a current of 10 amp.
- Potentiometer measures the potential difference more accurately than a voltmeter
- Which of the following is an example of ideal black body?
- What is the value of Ā+A in the Boolean algebra?
- A particle of mass m is projected with velocity v making an angle of 45° with
Topics: Work Energy and Power
(94)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- An electric motor operating on a 60 volt D.C supply draws a current of 10 amp.
- Potentiometer measures the potential difference more accurately than a voltmeter
- Which of the following is an example of ideal black body?
- What is the value of Ā+A in the Boolean algebra?
- A particle of mass m is projected with velocity v making an angle of 45° with
Topics: Work Energy and Power (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply