Abeam of light with a wavelength 760 nm in air travels in water. the index of refraction of water is 1.33. what is the wavelength in water?

The wavelength of water = 571.43 nm

Explanation:

Refractive index of water = wave length of light in air/wave length of light in water

R.d = λ₁/λ₂ Equation 1

making λ₂ the subject of equation 1

λ₂ = λ₁/R.d Equation 2

R.d = refractive index of water , λ₁ = wave length of light in air, λ₂ = wave length of light in water

Given: R.d = 1.33, λ₁ = 760nm

Substituting these values into equation 2

λ₂  = 760/1.33

λ₂  = 571.43 nm

Therefore the wavelength of water = 571.43 nm

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min