Which stateinent is accurate?​

If you chip a tooth, most likely you will go to the dentist to have the missing material filled in. currently the material used to fill in teeth is a polymer that is flexible when put in, yet is hardened to the strength of a tooth after irradiation with blue light at a wavelength of 461 nm. what is the energy in joules for a photon of light at this wavelength?

How is the shape of the poem “peer” connected to its meaning?

Δu of , in kj/kg, as it isto k, (a)as a of , (b) at , (c) at .