A ray of light traveling in water is incident on an interface with a flat piece of glass. The wavelength of the light in the water is 726 nm, and its wavelength in the glass is 544 nm. If the ray in water makes an angle of 56.0 with respect to the normal to the interface, what angle does the refracted ray in the glass make with respect to the normal?
PHYS 2010- Chapter 4 Notes What Is Force Definition: A force is something that is changes or tends to the state of rest or motion of an object. Force is not a thing on its own, its arises from interactions between objects. A force is avector. Described by a magnitude and a direction All vector rules apply. SI Unit of force: Newton, symbol N. Forces – Agent & Object A force is a push or a pull. Other examples: lifting, pressing, twisting, stretching…etc Force is a vector, it has magnitude and direction. Hence, we can draw vector diagrams for force. Combining Forces Net Force: Combination of all forces acting on 1 object at one time. Net force may be balanced or unbalanced. When several forces are exerted on an object, they combine to form a net force equal to the vect