Why might a scientist use a physical model of a plant cell instead of studying a cell directly?
no

An object is 10 cm from the mirror, its height is 1 cm and the focal length is 5 cm. what is the image height? (indicate the object orientation by including the + or - sign with the answer.) hi = cm +1 -1 +10 -10

Aregion of space in which a measurable gravitational force is indicated by the force exerted on a test mass is called

Astudent wears sunglasses to her read a book more easily which wave interaction occurs as light passes from the air into the plastic lenses? a polarization b.refraction c.diffraction d. interference