Light passes from a material a, which has an index of refraction of 4/3, into material b, which has an index of refraction of 5/4. if the angle of incidence is 30°, what is the angle of refraction? (a) 14.1° (b) 32.2° (c) 28.4° (d) 46.0° (e) 51.0°

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?

Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?

Which of these questions might a character ask if the conflict is man versus self? a. which path should i take to better myself? b. which boulder will be too heavy for me to carry? c. which friend is going to ditch me today? d. all of the above