Alight ray traveling in air enters a second medium and its speed slows to 1.71 × 10^8 meters per second. what is the absolute index of refraction of the second medium? (1) 1.00 (3) 1.75 (2) 0.570 (4) 1.94

Anybody wanna ? (picture included? )

Organelles are 1. responsible for producing power for the cell 2. tiny structures in the cell that carry out the cell's activities 3. responsible for digestion in the cell 4. found outside of the membrane

Which statement is best supported by the information in the chart? wave y is moving the fastest. wave x is moving the fastest. all of the waves are moving at the same speed. all of the waves have the same value of wavelengths per second.