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Do You Know Energy?
Energy is defined as the Ability To Do Work.
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Short Questions Notes Of Ch 6 Class 9th Physics
Ch#6 9th class physics notes for which board students?
- Lahore Board
- Sargodha Board
- Gujranwala Board
- Multan Board
- Rawalpindi Board
- Faisalabad Board
- DG Khan Board
- Sahiwal Board
- Bahawalpur Board
9th Class Physics Notes Chapter 6 Advantages
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SLOs Of 9th Class Physics Notes Of Work And Energy
Define work and its SI unit.
Calculate work done using the equation Work = force x distance moved in the direction of the force.
Define energy, kinetic energy, and potential energy.
State unit of energy.
Prove that kinetic energy and potential energy.
Solve problems using these equations.
List the different forms of energy with examples.
Describe the processes by which energy is converted from one form to another with reference to
Fossil fuel energy
State mass-energy equation and solve problems using it. Describe the process of electricity generation by drawing a block diagram of the process from fossil fuel input to electricity output.
List the environmental issues associated with power generation.
Explain by drawing energy flow diagrams through steady-state systems such as a filament lamp, a power station, or a vehicle travelling at a constant speed on a level road. Differentiate energy sources as non-renewable and renewable energy sources with examples of each.
Define the efficiency of a working system and calculate the efficiency of energy conversion using the formula:
efficiency = energy output converted into the required form / total energy input
explain why a system cannot have an efficiency of 100%. Define power and calculate power from the formula: Power = work done / time taken
Define the unit of power “watt” in SI and its conversion with horsepower.
Solve problems using mathematical relations learned in this unit.
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