A) Is it possible to say that a wave pulse( waves packet) has one particular wavelength? B) How are wave packets built (mathemat
ically speaking)?
1 answer:
Answer: A) we can write a wave packet like Y = ∑aₙ*cos(w*n*t)
So you have lots of different wavelengths here, and you think that a wave packet has a unified frequency, but not wavelength.
B) mathematically speaking you will write a wave packet like i did up there, has a sum of many waves, where for each one you can have an intensity aₙ and a different frequency, the only thing you must see is that all the waves you are suming are moving in the same direction.
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Answer:
The distance and average speed are 54.79 m and 10.85 m.
Explanation:
Given that,
Speed = 21.7 m/s
Time = 5.05 s
(a). We need to calculate the distance
Firstly we will find the acceleration
Using equation of motion
Where, v = final velocity
u = initial velocity
t = time
Put the value in the equation
Now, using equation of motion again
For distance,
The distance is 54.79 m.
(b). We need to calculate the average speed during this time
Where, D = total distance
T = time
Put the value into the formula
Hence, The distance and average speed are 54.79 m and 10.85 m.