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17.12.2020 •
Social Studies
Compared to absolute dating, what are the disadvanteges of relative dating
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Ответ:
The biggest disadvantage of the relative dating method is that it does not provide an age in years. Also relative dating can only determine the sequential order in which a series of events occurred, not when they occur.
Explanation:
Ответ:
Explanation:
Given:
Horizontal distance = 30 m
Note that Wavelength, lambda is the distance between two consecutive crests/troughs. Since,
One boat is at trough, the other is at crest.
The distance between a crest and a trough next to it = lambda/2
Complete cycles = 3 cycles
Time taken for the 3 cycles = 15 s
Vertical distance = 3.8 m
Wavelength, lambda = 2 × horizontal distance
= 2 × 30
= 60 m
Amplitude = vertical distance from the extreme loint to the mid point
= y/2
= 3.8/2
A = 1.9 m
In one cycle = 18/3
= 6 s/cycle
frequency, f = 1/T
= 1/6 = 0.17 Hz
speed,v = lambda × frequency
= 60 × 0.17
= 10 m/s