English

Define the term energy. - Physics

Advertisements
Advertisements

Questions

Define the term energy.

Define energy.

Definition
Advertisements

Solution 1

“Capacity of doing work” is called Energy.

shaalaa.com

Solution 2

Energy, in physics, is the capacity for doing work. It may exist in potential, kinetic, thermal, electrical, chemical, nuclear, or other various forms. There are, moreover, heat and work-i.e., energy in the process of transfer from one body to another.

shaalaa.com
  Is there an error in this question or solution?
Chapter 4: Energy - Short/Long Answer questions [Page 77]

APPEARS IN

Selina Concise Physics [English] Class 8 ICSE
Chapter 4 Energy
Short/Long Answer questions | Q 10 | Page 77
Selina Concise Physics [English] Class 7 ICSE
Chapter 3 Energy
Short/Long Answer Questions | Q 1
Selina Physics [English] Class 10 ICSE
Chapter 2 Work, Energy and Power
EXERCISE - 2(A) | Q 18. a. | Page 28
Frank Physics - Part 2 [English] Class 10 ICSE
Chapter 1 Force, Work, Energy and Power
Exercise 4 | Q 6 a. | Page 59
Frank Physics - Part 2 [English] Class 10 ICSE
Chapter 1 Force, Work, Energy and Power
Exercise 4 | Q 13 a. | Page 59

RELATED QUESTIONS

What is the work done by the moon when it revolves around the earth?


When does a force perform work?


Give reasons for the following A teacher moving around in the class is doing work but a child standing and reading a book is not doing any work.


It takes 20 s for a person A of mass 50 kg to climb up the stairs, while another person B does the same in 15 s. Compare the work done.


A vessel containing 50 kg of water is placed at a height 15 m above the ground. Assuming the gravitational potential energy at ground to be zero, what will be the gravitational potential energy of water in the vessel? (g = 10 m s-2)


A person of mass 50 kg climbs a tower of height 72 metres. Calculate the work done. (g = 9.8 m s−2).


A girl is carrying a school bag of 3 kg mass on her back and moves 200 m on a levelled road. If the value of g be 10 m/s2, the work done by the girl against the gravitational force will be :


How many watts equal one horse power?


Choose one or more correct alternatives.

Joule is the unit of ______.

  1. force
  2. work
  3. power
  4. energy

Give two examples of couple action in our daily life.


Give two examples of work done.


Define the unit 'watt'. How is it related to horse power?

Fill in the boxe to show the corresponding energy transformation.


A canon ball of mass 500g is fired with a speed of 15m/s-1. Find: its momentum.


What is the difference between renewable and non-renewable resources?


What are the advantages and disadvantages of using solar cells for producing electricity?


A force is applied on a body of mass 20 kg moving with a velocity of 40 ms−1. The body attains a velocity of 50 ms−1 in 2 seconds. Calculate the work done by the body.


A bucketful of water is to be drawn from a well ______ will be done when a ______ is applied to do this because there will be a ______ of water.
(displacement, work, force)


Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.

A green plant is carrying out photosynthesis.


Force acting on a particle moving in a straight line varies with the velocity of the particle v as F = `K/v`, where K is a constant. The work done by this force in time t is


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×