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work and energy school activity
Updated: 10/21/2020
work and energy school activity
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Storyboard Text

  • Power(P) is rate of doing work1.Power is a Scalar Quantity2. formula:P=WD t3.S.I. Unit of Work is Watt=Js-1
  • Now lets do discussion
  • Tomorrow we will learn about commercial unit of work but now lets do discussion first
  • Lina: Energy consumed in a particular time periodis called power.
  • Discussion of Power
  • Very Good Lina and Ria.All the points said by you are absolutely correct
  • Ria: Means power is said to be 1 watt when 1J work is done in 1 second
  • Lina:Means if I am doing a work of 60J in 20 sec. power used by me is 60 = 3Watt 20
  • Lina: Hey do you know what is Average Power's Formula
  • Ria: Yes I know, It is TOTAL WORK DONETOTAL TIME TAKEN
  • Ria: Yes, Now we can find rate of doing work easily
  • THIS IS A STORY WHERE I AM GOING TO TELL YOU ALL ABOUT WHAT IS POWER?.......THE FIRST SCENE IN STORY IS SHOWING US THAT THERE IS A PHYSICS TEACHER WHO IS TEACHING FEW BASIC THINGS ABOUT POWER .
  • COMMERCIAL UNIT OF ENERGY= KWh1KWh= IKW.1hr =1000Wx3600sec. = 3.6x 106 J
  • NEXT SCENE IN STORY IS SHOWING THAT TEACHER IS TAKING DISCUSSION OF POWER AND WE GET TO KNOW TWO MORE POINTS ABOUT POWER.
  • Tina: what is energy possessed when 2kw of power is utilised in 1 Hr..
  • IN THIRD SCENE OF THE STORY WE SEE ONE NUMERICAL OF POWER AND LEARN HOW TO SOLVE IT..........
  • Ria: Now we have also learnt commercial unit of energy
  • IN THIS SCENE WE LEARNT COMMERCIAL UNIT OF ENERGY.....
  • IN THIS SCENE WE SEE ONE NUMERICAL OF COMMERCIAL UNIT OF ENERGY.......WE WILL KEEP ON LEARNING NEW THINGS IN THIS YEAR..
  • Ria: Energy Possessed is 2KW.1Hr=2000Wx 3600 sec.=72x105J
  • SEE YOU GUYS SOON...........
  • Lina: Yes
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