Get a free home demo of LearnNext

Available for CBSE, ICSE and State Board syllabus.
Call our LearnNext Expert on 1800 419 1234 (tollfree)
OR submit details below for a call back

clear
searchtune
What people are asking?

Pranesh Rao

Dec 24, 2014

Derive the  expression for the following:
a] kinetic energy
b] potential energy

  Answer.


Derivatio...

Answer (3)

Madhusudhan rathi

Mar 12, 2014

 Derive f the equation for kinetic energy?
 Derive f the equation K.E = ½ m v 2

This answer has an image. Please click on the question to read more.

Answer (4)

Milan

Feb 6, 2014

Calculate the work required to be done to stop a car of 1500 kg moving at a velocity of 60 km/h?

This answer has an image. Please click on the question to read more.

Answer (8)

Abhishek

Feb 28, 2014

A bullet fired into a fixed target loses half of its velocity after penetrating 3cm. How much futher it will penetrating before coming to rest assuming that it faces constant resistance to motion.

This answer has an image. Please click on the question to read more.

Answer (2)

Rushin Naik

Feb 17, 2015

1. What is work done by a coolie walking on level road with load on his head?
2. Why is work done zero when, the direction of displacement and the direction of force on a body are perpendicular to each other?


Work done on an object is energy spent to do work on object against a f...

Answer (3)

Varunkumar Medi

Jan 2, 2014

what are three characteristics of sound waves ? On what factors do they depend .

Characteristics of sound waves:
Wavelength: Sound consists of a longitudinal wave that includes compressions and rarefactions as they travel through a...

Answer (3)

Trisha Sharma

Feb 18, 2016

wht is commercial unit of energy ? wht is its use??? relate with SI unit of energy

Ans:
The commercial unit of energy is kilowatt hour (kW-h)
The kilowatt-hour is not a standard unit in any formal system, but it is commonly used in el...

Answer (4)

Nipunn verma

Oct 14, 2013

Is Potential energy a vector quantity or scalar?

Potential energy is a scalar quantity. it has only magnitude but no direction. But in some cases we may consider  it as either positive or negative. This does not mean that it...

Answer (9)

Garvita jain

Jan 5, 2015

A body of mass 2 kg falls from rest. What will be its kinetic energy during the fall at the end of 2 s?(assume g=10 m/s2)

This answer has an image. Please click on the question to read more.

Answer (2)

Pranesh Rao

Dec 24, 2014

Derive the  expression for the following:
a] kinetic energy
b] potential energy

  Answer.


Derivatio...

Answer (3)

Madhusudhan rathi

Mar 12, 2014

 Derive f the equation for kinetic energy?
 Derive f the equation K.E = ½ m v 2

This answer has an image. Please click on the question to read more.

Answer (4)

Milan

Feb 6, 2014

Calculate the work required to be done to stop a car of 1500 kg moving at a velocity of 60 km/h?

This answer has an image. Please click on the question to read more.

Answer (8)

Abhishek

Feb 28, 2014

A bullet fired into a fixed target loses half of its velocity after penetrating 3cm. How much futher it will penetrating before coming to rest assuming that it faces constant resistance to motion.

This answer has an image. Please click on the question to read more.

Answer (2)

Rushin Naik

Feb 17, 2015

1. What is work done by a coolie walking on level road with load on his head?
2. Why is work done zero when, the direction of displacement and the direction of force on a body are perpendicular to each other?


Work done on an object is energy spent to do work on object against a f...

Answer (3)

Varunkumar Medi

Jan 2, 2014

what are three characteristics of sound waves ? On what factors do they depend .

Characteristics of sound waves:
Wavelength: Sound consists of a longitudinal wave that includes compressions and rarefactions as they travel through a...

Answer (3)

Trisha Sharma

Feb 18, 2016

wht is commercial unit of energy ? wht is its use??? relate with SI unit of energy

Ans:
The commercial unit of energy is kilowatt hour (kW-h)
The kilowatt-hour is not a standard unit in any formal system, but it is commonly used in el...

Answer (4)

Nipunn verma

Oct 14, 2013

Is Potential energy a vector quantity or scalar?

Potential energy is a scalar quantity. it has only magnitude but no direction. But in some cases we may consider  it as either positive or negative. This does not mean that it...

Answer (9)

Garvita jain

Jan 5, 2015

A body of mass 2 kg falls from rest. What will be its kinetic energy during the fall at the end of 2 s?(assume g=10 m/s2)

This answer has an image. Please click on the question to read more.

Answer (2)

Filters