Determine the net force (Fnet) on an object that experiences the forces shown. SP2. Obtain, evaluate, and communicate information about how forces affect the motion of objects..c.
Use mathematical representations to calculate magnitudes and vector components for typical forces
including gravitational force, normal force, friction forces, tension forces, and spring forces
20 N of downward gravity force
15 N of rightward applied force
20 N of upward normal force
10 N of leftward friction force

True or false: the revolution of the earth creates day and night as it rotates around the sun

People with normal vision cannot focus their eyes underwater if they aren't wearing a face mask or goggles and there is water in contact with their eyes. in a simplified model of the human eye, the aqueous and vitreous humors and the lens all have a refractive index of 1.40, and all the refraction occurs at the cornea, whose vertex is 2.60 cm from the retina. with the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 2.05cm in front of the eye.)

Can a molecule have bond dipoles but not have a molecular dipole?