If you're a psychologist who is fascinated by how alcohol acts on the nervous system to alter perception, you probably follow the perspective.
a. biological
b. existential
c. psychoanalytic
d. cognitive

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative

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 1.90

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?