1. a fiber-reinforced composite material has moduli of elasticity in the longitudinal and transverse directions of 6.9 gpa and 3.5 gpa, respectively. if fibers make up 25% of the composite volume and 56% of them are oriented in the longitudinal direction, find the moduli of elasticity of the fiber and matrix phases. assume that all fibers not oriented in the longitudinal direction are oriented transversely.

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.

the moving of the box is a result of centripetal force. think of that  as a car or a truck in this case creates a turn, the force of friction performing upon the turned wheels of the car runs centripetal force obligatory for circular motion for the things inside it.