Answer: relative motion between observer and the sound source.
Explanation: The Doppler effect states that when there is a relative motion between an observer and a sound source the frequency of sound perceived by the observer is different in frequency from the original from the source.
The mathematical back up for this claim is given below.
f' = (v+v') /(v-vs) × f
Where f' = observed frequency
v = speed of sound in air
v' = velocity of observer
vs = velocity of source
f = frequency of sound source.
From the formulae, it can be seen that a change in the value of the velocity of observer (v') and source (vs) produces different value of observed frequency (f').
Note, frequency of sound (f) is a constant.
The fraction of the magnitude of the kinetic energy lost is . = 0.955.
using the law of conservation of momentum,
kinetic energy lost,
Δ
(see image )
now, for the other part
the fraction of the kinetic energy lost,
ΔKE/ KE =
ΔKE/ KE =
ΔKE/ KE = 0.955.
what is kinetic energy ?
The energy that an object has as a result of motion is known as kinetic energy. It is stated as the effort needed to transfer a bulk body from rest to the given velocity. The body holds onto the kinetic energy it gained during its acceleration until its speed changes.
Learn more about kinetic energy here:-
brainly.com/question/999862
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Answer:
a) V = 5.47m/s
b)
Explanation:
Since the ball and the player become a whole system after the catch:
Solving for V:
The initial kinetic energy was:
The final kinetic energy was:
So, the change in the kinetic energy was:
Answer:
I think its chemical properties. forgive me if I'm wrong. Btw in in k12 too