If the velocity is constant, describe the the slope of the graph on a position vs. time graph.

What happens to light waves from a star as the star moves away from earth?

What is the type of the reaction below? bacl2 + h2so4 → 2 hci + baso4 double replacement synthesis single replacement decomposition

Two polarizers are oriented at 70∘∘ to one another. unpolarized light falls on them. what fraction of the light intensity is transmitted?