What is the maximum angle a light ray can make with the wall of the core if it is to remain inside the fiber? Express your answer with the appropriate units.

Adelivery truck leaves a warehouse and travels 2.60 km north. the truck makes a left turn and travels 1.25 km west before making another right turn to travel 1.40 km north to arrive at its destination. what is the magnitude and direction of the truck's displacement from the warehouse?

The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane

Apersons beliefs and general outlook, which act like filters on the information they receive are called ?