Ill mark the brainliest pls lmk what answer ty
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Ответ:
2800 m
Further explanationGiven
time = 80 s
average velocity = 35 m/s
Required
total distance before it broke down
Solution
Average velocity : total displacement : total time
Can be formulated
avg velocity = Δx : Δt
Input the value :
Δx=avg velocity x Δt
Δx = 35 m/s x 80 s
Δx = 2800 m
In addition, if we are asking for velocity, we must know the starting and ending points (displacement)
But if we calculate the total distance, what is written is the average speed
avg speed = total distance : total time
Ответ:
Δf = 73.72Hz
Explanation:
In order to calculate the difference in frequency between the direct waves and the reflected waves, you first take into account the Doppler's effect for an observer getting closer to the source:
You can assume that the reflected waves come from a source "the whale". Then you have:
f': frequency of the reflected waves = ?
f: frequency of the source = 22.0*kHz = 22.0*10^3 Hz
v: speed of the sound in water = 1482m/s
vs: speed of the source = 4.95m/s
vo: speed of the observer = 0m/s
You replace the values of the parameters in the equation (1):
Then, the difference in frequency is: