How many ounces of silver in a silver quarter?

Analyze how limestone is weathered and identify the features that are formed as a result of this dissolution

Which of the following would have less momentum than a 52 kg cheetah running at 10 m/s?

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?