D=m/v then v=m/d=17.5/2=8.75ml
Answer:
shown in the attachment
Explanation:
The detailed step by step and necessary mathematical application is as shown in the attachment.
You can determine wavelength with “x”
I'm assuming you mean models of the solar system:
Both Aristotle and Ptolemy had the idea that the solar system was geocentric. This means that all objects in the solar system including the Sun revolve around the Earth.
A - the amount of time needed to travel the distance
The formula for speed is distance/time and the unit is m/s. Therefore you divide the distance travelled by the time it took to travel it.