Abeam of yellow monochromatic light passes from liquid water (n=1.333) into ice (n=1.309). in the liquid water, the beam makes an angle of 40.0 with the normal. when the beam is traveling in the ice, what angle does it form with the normal?
40.7
39.3
41.2
68.5

Suppose a force of 60 n is required to stretch and hold a spring 0.1 m from its equilibrium position. a. assuming the spring obeys hooke's law, find the spring constant k. b. how much work is required to compress the spring 0.5 m from its equilibrium position? c. how much work is required to stretch the spring 0.6 m from its equilibrium position? d. how much additional work is required to stretch the spring 0.1 m if it has already been stretched 0.1 m from its equilibrium? a. kequals 600