A symmetric double-convex lens has radii of curvature equal to 11 cm. It is made from glass that has an index of refraction equal to 1.59 for blue light and equal to 1.54 for red light. Find the focal length of this lens for the following light. a. red light
b. blue light

Which best describes the first law of thermodynamics as compared to the second law of thermodynamics? a. the first law describes how thermal energy is conserved but not the direction it moves. b. the first law describes the direction thermal energy moves but not how it is conserved. c. the first law describes how thermal energy can be created but not how it can be destroyed. d. the first law describes how thermal energy can be destroyed but not how it can be created.

Both independent and dependent clauses

If there's a small amount of friction between two surfaces, the result could be select all that applya. no movement b. heatc. a little bit of movementd. sliding around