badge image

Enroll For Free Now & Improve Your Performance.

×
User Icon
User Icon
User Icon
User Icon
User Icon

Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
Grade: 11

                        

Discuss the words "energy conservation" as used (a) in this chapter and (b) in connection with an "energy crisis" (for example, turning off lights). How do these two usages differ?

5 years ago

Answers : (1)

Aditi Chauhan
askIITians Faculty
396 Points
							(a) In an isolated system in which only conservative forces act, any change in the total kinetic energy of the system must be balanced by an equal and opposite change in its potential energy, so that the sum of these changes is zero. Therefore the word “energy conservation” of a system signifies that, loss of energy of the system is zero. The energy can be converted from one form to another. Thus the sum of total energy, in this universe, is always same.
(b) The energy lost in one form is exactly equal to the energy gained in other form. According to relativistic concept matter and energy are inter-convertible. Thus law of conservation of energy contains conservation of matter in itself. The usage of the term depends on the perception of the term energy crises. If one perceives energy crises as the difference between the rates of production of energy against the rate of its consumption then energy conservation can be an appropriate term.Energy is useful in a sense that it highlights the amount of useful work that can be extracted while the energy conservation is useful in a sense that it highlights the rate at which the work has been extracted.
5 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies


Course Features

  • 101 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution


Course Features

  • 110 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details