Answer:
v = 2 cm/s
Explanation:
The equation of the wave is
y(x,t) = (2.0cm)*cos(2π*x−4π*t)
Where,
x is measured in cm
t in s
A more general formula for this equation would be
y(x,t) = A*cos(k*x−ω*t)
A = amplitude.
k = the wavenumber
ω = the angular frequency
The velocity of the wave corresponds to
v = ω/k
v = 4π / 2π = 2 cm/s
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said
1 a
2 b
3 a
\idonotcare.net
Red clothes look red because they REFLECT the red light, and absorb light of other colors.
mgh= 10 x 8 x 10
= 800
but you can try 10 x 8 x 4^-1 x 10
five characteristics: Wavelength, Amplitude, Time-Period, Frequency and Velocity or Speed
