Which is unnecessary to include when accurately drawing ray diagrams? focal point
lens
focal length
three easy rays

Which boundary is associated with the building of the himalaya mountains? convergent transform divergent hot spot

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?

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt