Uvc light used in sterilizers, has wavelengths between 100 to 280 nm. if a certain uvc wave has a wavelength of 219 nm, what is the energy of one of its photons in j? once you have the value, take it log (base 10) and enter that with three decimal places as your answer. do not enter units.

-18.042

Explanation:

We can find the energy of a photon (E) using the Planck-Einstein equation.

E = h . ν  =  h . c . λ⁻¹

where,

h is the Planck's constant

ν is the frequency

c is the speed of light

λ is the wavelength

E = (6.63 × 10⁻³⁴ J.s) × (3.00 × 10⁸ m/s) × (219 × 10⁻⁹ m)⁻¹ = 9.08 × 10⁻¹⁹ J

log (9.08 × 10⁻¹⁹) = -18.042

answer: any goods being imported from another country may be subject to issued by the federal government are tariffs

explanation:  

tariffs are a tax on anything that are imported from abroad. government use them to protect and boost their local industries and the thought is that they encourage consumers to buy local instead of importing and they will hope will protect jobs and economy in the country that implements them  

d

explanation: