A candle is placed in front of a concave mirror. The image produced by the mirror is:
Virtual, upright and magnified
Real, inverted and magnified
Virtual, upright and demagnified
Real, inverted and demagnified

Agas is contained in a thick walled balloon when the pressure changes from 1.21 atm to 2.52 the volume changes from 3.75 l to 1.72 l and the temperature change from 293k to blank k

What is the mass of 8 moles of sodium atoms

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?