Akio draws the ray diagram shown.
focal point
focal point
which best explains how to correct akio's mistake?
change the lens so it appears convex instead of concave.
move the small car so it appears on the left side of the lens.
make the small car much larger than the other car.
draw the top ray so that it passes through the focal point on the right .

Two friends are having a conversation. anna says a satellite in orbit is in freefall because the satellite keeps falling toward earth. tom says a satellite in orbit is not in freefall because the acceleration due to gravity is not 9.80 m/2 . who do you agree with and why?

Imagine you work as a consultant, and your daily job involves listening to the constructive criticism of others. as part of your job, you must listen to opposing viewpoints to make important decisions. in this activity, you are a consulting dam engineer. you must make a decision about four different dams; should they be repaired, taken down, or left alone? you will listen to contrasting opinions about what should be done with the dams before you make the final decision. as the consulting dam engineer, what do you decide to do with this dam? explain your reasoning. by making your decision, did you support the opinions of the mayor and/or the dam safety official? why or why not? (site 1)

What are similarities and differences between refraction, reflection, diffraction and absorption?