The blue color of the sky results from the scattering of sunlight by air molecules. the blue light has a frequency of about 7.5 x 1014 hz. what is the energy associated with this frequency?

The energy associated with blue light is

Explanation:

To calculate the energy of the light for a given frequency, we use the equation given by Planck, which is:

where,

E = energy of the light

h = Planck's constant =

= frequency of the light =

Putting values in above equation, we get:

Hence, the energy associated with blue light is

first let us lay out the formula for potential

and kinetic energy:

pe = mgh

ke = (mv^2)/2

where: m=mass, v=velocity, g=gravitational

acceleration, h=height

calculating for mass using the known values of

pe:

340j = m (9.81 m/s^2) (50ft) (1m/3.28ft)

m = 2.27 kg

the law of conservation of energy states that

energy is neither created nor destroyed. therefore, the change in kinetic

energy from 50 ft to 35 ft would be equal to the change in potential energy

from 50 ft to 35 ft. however it would be opposite in signs since one is losing

while other is gaining.

ke(35ft) – ke(50ft) = - [ pe(35ft) – pe(50ft]

ke(50ft) = 0 since the brick is initially at rest

ke(35ft) = 340j - 2.27kg (9.81 m/s^2) (35ft)

(1m/3.28 ft)

ke(35ft)

= 102.38 j