Anybody know the answers

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?

Aman applies a force of 500n to push a truck 100m down the street how much does he do?

Calculate the mass of 0.750 mol of the following substance. na3po4.