11 is the answer for this question
Answer:
192.6 Hz
Explanation:
v = Velocity of sound in air = 335 m/s
Actual frequency = 200 Hz = f
Observed frequency = 208 Hz =
Speed of train =
Doppler effect when the source is moving towards observer
Doppler effect when the source is moving away from observer
∴ Frequency he observes as the train moves away is 192.6 Hz
Answer:
is called square of Coefficient of Restitution
Explanation:
As we know that the coefficient of restitution is the ratio of the body after collision to the ratio of the body before collision.
<u>Mathematically:</u>
where:
relative velocity after collision
relative velocity before collision
also, in terms of Kinetic energy:
where:
relative kinetic energy after collision
relative kinetic energy before collision
- e=0 for perfectly elastic collision
- 0<e<1 for real world inelastic collision
- e>1 for the collision in which energy is released
- e<1 for the objects passing through one another without fully engaging.