Question

1. calculate the speed of a wave that travels 10 cm in 4 seconds?

2. if a wave is moving with the speed of 10 cm/s, how far does it travel in 1.5 seconds?


3. what is the wavelength of a wave that has a speed of 40 cm/sand a frequency of 4 Hz?


4. what is the velocity of a wave that have a wavelength of 2 cm in if we can see him 25 Hz?

Answer 1

Use this equation
Distance(s)=speed(v)•time(t)
Given,req-soln
1.
S=10cm=0.1m
t=4sec
V=s/t=>0.1•10/4•10=>1/40=0.025
2.
V=0.1m/s
t=1.5 sec
S=vt =0.1•1.5=0.15