Nick’s swimming goggles are made of blue plastic. when he straps them on, he notices that the goggles change the color of the objects around him. a white ring buoy appears the blue plastic colors of light except blue. only the blue light the ring buoy passes through the blue plastic.
options for first blank: blue, violet, or white
options for the second blank: absorbs, reflects, or refracts
options for the third blank: absorbed by, reflected from, or refracted by

Explanation :

The wavelength of blue light is in between 480 nm - 520 nm. Nick’s swimming goggles are made of blue plastic. When he straps them on, he notices that the goggles change the color of the objects around him.

A white ring buoy appears blue. This is because the blue plastic absorbs all colors of light except blue.

Only the blue light reflected from the ring buoy passes through the blue plastic.

Hence, the correct options are:

(1) blue

(2) absorbs

(3) Reflected from

  distance on the y-axis and time on the x-axis.

explanation:

the instantaneous velocity = change in position/time taken

the slope of the graph should give instantaneous velocity.

  slope of a graph = change in value of y -axis / change in values of x -axis

  comparing both the equations

    change in value of y -axis = change in position

  change in values of x -axis = time taken

so position values should be on the y axis and time values should be on the x axis.

distance on the y-axis and time on the x-axis.

the minimum constant speed at which she can catch the train is 2.7 m/s

given:

acceleration = 0.6

time = 4.5 s

to find:

velocity = ?

formula used:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

solution:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

v = 0 + (0.6 × 4.5)

v = 2.7 m/s

the minimum constant speed at which she can catch the train is 2.7 m/s