Humans have three types of cone cells in their eyes, which are responsible for color vision. Each type absorbs a certain part of the visible spectrum. Suppose a particular cone cell absorbs light with a wavelength of 430 nm. Calculate the frequency of this light. Be sure your answer has the correct number of significant digits.

Frequency of the light will be equal to

Explanation:

We have given wavelength of the light

Velocity of light is equal to

We have to find the frequency of light

We know that velocity is equal to , here is wavelength and f is frequency of light

So frequency of light will be equal to

So frequency of the light will be equal to

given data:

determine the horse power (h.p) = ?

force applied to move the box(f) = 10 pounds,

box lifted from a distance         (d) = 3 feet

time taken to lift                         (t) = 10 sec,

the horse power is defined as amount of work required to move a load. the horse power is equal to 550 foot-pound per second

                  1 h.p   = 550 foot-pound/second

it can also be defined as the the load that need to be move a body for certain distance in a certain amount of time.

mathematically,

                      h.p = (force × distance)/ time

                            = (10 × 3)/ 10

                            = 30/10

                            = 3 foot -pound/sec

hence, the horse power is needed to move the box is 3 foot-pound/second

important note: 1 h.p = 550 foot-pound/second = 746 watts

answer: a) y=-8x+5

a) m= -8

b) m= -2

c) m= 7

d) m= 6