I don’t think we can answer this question with the information given. ANY ball thrown with ANY initial velocity v will be observed at a height h twice and with a time interval Δt.
Answer:
when an x-ray passes trough matter, it undergoes a process called attenuation
They only conduct when they are in solution form, because then their ions become mobile, and the ions conduct electricity.
Hope this helps!
B the desert was once covered in water
Water doesn't belong on that list.
If it's removed, then there's a space to add GAS, which does belong.
