The properties of some rare earth elements make them essential ingredients in electronics. Rare earth elements appear together i
n the same general area of the periodic table of the elements. The graph shows two properties of several rare earth elements.
Is it accurate to say that the rare earth elements, as a group, share the same properties? Support your answer using the information in the graph.
Is it accurate to say that the rare earth elements, as a group, share the same properties? Support your answer using the information in the graph.
2 answers:
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Answer:
v= 1.71 m/s
Explanation:
Given that
Distance between two successive crests = 4.0 m
λ = 4 m
T= 7 sec
T is the time between 3 waves.
3 waves = 7 sec
1 wave = 7 /3 sec
So t= 7/3 s
We know that frequency f
f= 1/t= 3/7 Hz
Lets take speed of the wave is v
v= f λ
f=frequency
λ=wavelength
v= 3/7 x 4 = 12 /7
v= 1.71 m/s
