A spring with a spring constant of 8N/m is stretched a displacement of 1.8mho the right. What force does the spring exert?

answeralert drivers who drift off the road;

answer: the correct answer for the fill in the blank is rods.

rods are the specialized photoreceptor cells that are present in the retina of human eye. they are responsible for vision in the night time ( also called scotopic vision). they have very low visual acuity and color distinguishing ability.

as they are responsible for vision in night time, therefore they are found predominantly in the nocturnal animals.