What happens to a ray of light passing through the center of a lens?
a.
it passes without any deviation.
b.
it converges to the focal point.
c.
it travels parallel to the principal axis.
d.
it diverges away from the principal axis.

Aray diagram for a refracted light day is shown. what does the dashed line represent

Aspring with a mass of 2 kg has a damping constant 14 kg/s. a force of 3.6 n is required to keep the spring stretched 0.3 m beyond its natural length. the spring is stretched 0.6 m beyond its natural length and then released. find the position of the mass at any time t. (assume that movement to the right is the positive x-direction and the spring is attached to a wall at the left end.)

Abookcase has a mass of 38 kg and the coefficient of friction between it and the floor is 0.82 what is the maximum force of friction between the bookcase and the floor a 372n b 305n c 412n d 449n