Abeam of white light from a flashlight passes through a red piece of plastic. a. what is the color of the light that emerges from the plastic? b. is the emerging light as intense as, more intense than, or less intense than the white light? explain. c. the light then passes through a blue piece of plastic. describe the color and intensity of the light that emerges.

A. Red

B. Less intense

C. No intensity, and color (theoretically)

Explanation:

A. red objects only reflect red light, which means it absorbs the rest of the light waves.

B. because of what happens in A. (absorption of the other color of waves) We loose a part of the light so, the intensity decreases.

C. Theoretically, the light that gets reflected (goes through) the light object has only red waves, so no green OR BLUE which means that all the red light will be absorbed by the blue object and nothing will be reflected since there's no blue light to reflect -> no intensity, no color.

a and b sometimes have a positive value

russian is not my first language, so i'm afraid i can't write out an answer in russian, but hopefully you can find a way to do so. here's my best translation of the problem: you're given a plot of a particle's position in one-dimensional space over time, and you're asked to find either the total distance traveled by the particle after 6 seconds had elapsed, or the total displacement of the particle after 6 seconds.

if you want the total distance traveled, you would first need to determine the particle's velocity as a function of time, then integrate that over the 6-second interval. we know the position function is quadratic with roots at 0 and 6, so we have

where is unknown. because the position is parabolic, there is symmetry about the midpoint at , and we know that

so that the position function is

which means the velocity is

then the total distance traveled is

so the total distance traveled is 20 m.

on the other hand, if you want to find displacement: the particle starts at and ends at , so its displacement is 0.