Which of the following is TRUE about electromagnetic (EM) energy? Sound energy is a form of electromagnetic energy.
All forms of electromagnetic energy have both an electrical and magnetic properties
Radio waves are used for radiation therapy to kill tumor cells
All forms of electromagnetic energy do not travel at the speed of light in empty space

What is the empirical formula for c4h8o2

Select the correct answer from each drop-down menu. describe what happens to a carbon-11 atom when it undergoes positron emission. the decay of a carbon-11 atom _1_, and this causes it to emit _2_.options for 1: > changes a neutron into a proton> changes a proton into a neutron> is hit with a neutron> reconfigures its protons and neutronsoptions for 2: > a negatively charged electron-sized particle> a positively charged election-sized particle> two atoms and several neutrons> two neutrons and two protons

The identities of substances are the same before and after which type of change