An experiment wanted to find the speed of light in a substance. When a laser beam entered the substance with an incident angle of 30°, the angle of refraction was found to be 22°. What value for the speed of light would the experimenter obtain with this data? (The speed of light in air is approximately 3x10⁸ m/s.)​

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?

Astone weighing 1.5 kilograms is resting on a rock at a height of 20 meters above the ground. the stone rolls down 10 meters and comes to rest on a patch of moss. the gravitational potential energy of the stone on the moss is joules.

Urgent pls a. coal consumption levels off and remains flat. b. petroleum, natural gas, and renewables show an increase in consumption c. more nonrenewable resources continued to be consumed than renewable. d. there is little projected increase in nuclear energy use. e. carbon dioxide emissions are projected to decline as we approach 2040. global energy consumption is defined as the total energy used by an individual or organizations from around the world. use the graph above to analyze the projected energy consumption from now until 2040. which statements in the prompt apply? a) a, b, d b) b, c, d c) a, c, d d) a, b, c, d