The wavelength of a beam of light is 1.20 cm. what is the energy of one photon of this radiation?

Photon energy is the energy carried by a single photon with a certain wavelength and frequency. These terms are related by an equation. 
E = hv
where h is the Planck's constant (6.626 x 10-34 J s), v is the frequency which is related to the wavelength by:

λv = c where λ is the wavelength and c is the speed of light (3.00 x 108 m/s)

Therefore, the energy equation 
E = hc / λ
E = (6.626 x 10-34 J s)(3.00 x 10^8 m/s) / 0.0120 m = 1.657 x 10^-23 J

im not to sure what it is

answer: question1

1,000 tons

question2

3: 8

question 3

store d

step-by-step explanation: