Advertisements
Advertisements
Question
Express joule in terms of erg.
Advertisements
Solution
Relation between joule and erg :
1 joule = 1N × 1m
But 1N = 105 dyne and 1m =100 cm = 102 cm
Hence, 1 joule = 105 dyne × 102 cm
= 107 dyne × cm
= 107 erg
Thus, 1 Joule = 107 erg.
APPEARS IN
RELATED QUESTIONS
An object thrown at a certain angle to the ground moves in a curved path and falls back to the ground. The initial and the final points of the path of the object lie on the same horizontal line. What is the work done by the force of gravity on the object?
The work done on an object does not depend on ______.
What is the work done when the object acted upon by a force remains at rest?
When you move upstairs, do you perform some work?
Write an expression for the work done against gravity.
State the energy changes which take place when Water stored in the dam is used to turn turbine in dynamo.
Explain, why submarines are able to dive underwater as well as a sail on the surface of the water?
What is work?
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
Suma is swimming in a pond.
