The Radium (Ra) nucleus decays as follow, 226Ra → ARn + 4He 88 Z 2 (a) What type of radioactive decay is this? (b) Find the atomic mass number A and the proton number Z of the resulting Radon (Rn) nucleus. (c) Given the masses (expressed in atomic mass unit, u) are 226.025410u for Radium, 2 222.017578u for Radon and 4.002603u for Helium and the square of the speed of light, c , is 931.494 MeV/u, calculate the energy released in this nuclear decay.

Which statement is best supported by the information in the chart? wave y is moving the fastest. wave x is moving the fastest. all of the waves are moving at the same speed. all of the waves have the same value of wavelengths per second.

Tafari worked one summer on a ship that set weather buoys in the ocean. he watched how one of the buoys moved in the water. describe which parts of the wave would cause the buoy to bob up and down. which wave property determined how fast the buoys bobbed in the water? he observed that when the wind blew harder, the ocean waves were larger, and the buoys moved away from the ship. what effect, if any, did the waves have on how far the buoys moved? explain your answer.

Which branches of natural science include the study of an organism that lived 10 million years ago