Optical engineers need to know the cone of acceptance of an optical fiber. this is the maximum angle that an entering light ray can make with the axis of the fiber if it is to be guided down the fiber. what is the cone of acceptance of an optical fiber for which the index of refraction of the core is 1.55 while that of the cladding is 1.45? you can model the fiber as a cylinder with a flat entrance face.

what best describes physical development during adolescence is the development of secondary sex characteristics happens at a rate unique to each individual.

1= 26.17

2= 1.17

3=30.86

4=5.86

just took the assigment on edge

the word that best describes martin luther king jr.'s tone in the video is dignified

martin luther king, jr. was a social activist and baptist minister who played a key role in the american civil rights movement from the mid-1950s until his assassination in 1968. the video shows his manner and attitude having or showing a composed or serious manner that is worthy of respect so dignified is the correct answer