A scuba diver shines a flashlight from beneath the surface of water (n = 1. 33) such that the light strikes the water-air boundary with an angle of incidence of 43°. At what angle is the beam refracted?.

Did the universe cool off or get hotter as it expanded after the 'big bang"?

The y-value if a data point corresponding to x1

Classify each action depending on whether it will meet or fail to meet the goals of the organization. a group of students form a healthy earth club at their school. their goal is to limit their school’s impact on human-led climate change. they brainstormed a list of actions they can take to meet this goal.