formulas which is used in physics for 9th standard chapters are :-
*work and energy
*sound
*gravitation
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Following are the formulas for Work and energy:-
1. Work=Force x distance or displacement.
2. work=m×g×h.
3. kinetic energy=1/2×m×v².
4. potential energy=mgh.
5. power=work done/time taken.
Following formulas for sound:-
1. frequency=1/time period.
2. velocity=frequency×wavelength.
3. for SONAR--speed=distance/time or distance=speed×time or distance=velocity×time/2.
1. Work=Force x distance or displacement.
2. work=m×g×h.
3. kinetic energy=1/2×m×v².
4. potential energy=mgh.
5. power=work done/time taken.
Following formulas for sound:-
1. frequency=1/time period.
2. velocity=frequency×wavelength.
3. for SONAR--speed=distance/time or distance=speed×time or distance=velocity×time/2.
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