Asource emits a sound and is represented by the red dot in this map. four people are located around the source, and the circles represent the sound wave. as the source moves west, which person hears the highest pitch? person a person b person c person d

Cobalt-60 is an artificial radioisotope that is produced in a nuclear reactor and is used as a gamma-ray source in the treatment of certain types of cancer. if the wavelength of the gamma radiation from a cobalt-60 source is 1.00 × 10-3 nm, calculate the energy of a photon of this radiation.

Zinc + lead(ii) nitrate yield zinc nitrate + leadwhat's the chemical equation for this?

The pressure inside a hydrogen-filled container was 2.10 atm at 21 ? c. what would the pressure be if the container was heated to 92 ? c ?