That's the definition of the PERIOD of the vibration.
It's exactly the reciprocal of the vibration's frequency.
If the collision is inelastic, there is every possibility that the large body will drag the small stationary body along with it in the direction of the collision. Some amount of heat, light and sound energy will also be produced due to the kinetic energy of the large body. I hope the answer helps you.
Answer: let north be+ and south be-
therefore, -1 km is the resultant displacement of the bird
hope it helped u,
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they absorb sunlight and turn it into glucose I think.