Chapter- Work and Energy
Class 9th
Physics
Answers
Answer:
work is equals to displacement into force in scientific way the work is not equals to doing hard work in studies and another work it is your emotional work work like we're doing not doing study hard work we doing when we are working it also work we apply force in particular direction we cover displacement it is equals to the work displacement when displacement is multiplied by the force is equals to work haven't think energy what is energy energy to do work energy is a capability to do work then work is equals to energy energy also equals to the displacement X the force are class 9th we study only one type of energy mechanical divides into the two type potential and kinetic the energy stored in object while in rest position is called the potential energy for example when we stretch out about it expand it is to the potential energy when we release the object it converts into the potential energy they had the low difference between the potential energy and gravitational potential energy energy energy when the object is at rest when the object is falling down from the height when object at more hide their energy when object at the less height it is low
Answer:
i))When the battery is used to start the car, The energy is converted from electrical to mechanical energy to move the car, The chemical energy in the form of gasoline converts to the mechanical energy, and each transformation leads to the production of the heat.
ii)Electrical energy to Mechanical energy
iii)Electrical Energy to Mechanical Energy
iv)Potential Energy to Kinetic Energy
OIf the radio works on Electricity then the energy transformation would be Chemical Energy to Sound Energy
v) Electric energy to light Energy
vi)Chemical Energy to Sound energy ( if the radio works on battery then it is Chemical Energy )
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