<span>Waves cause erosion through the processes of impact and abrasion. </span><span>
2. c. they move up and down, but do not move forward. </span>
Answer:
The speed of a wave would be 18 with a wavelength of 2 m and a frequency of 9 Hz.
First you have to note down you horoscope for 2-3 days.
Daily observe what is written in your horoscope is true or not. You can observe your entire day movements.
Now you have to conclude whether your horoscope was true or not and you have to write an essay explaining what had happened to you in past observation and conclude whether you believe in astronomy or not depending on your observations
Frequency = speed ÷ wavelength
= 330m/s ÷ 2.5m
= 132 Hz
Using the relationship: speed=wavelength·frequency you get:
wavelength=320/300=1.06 m