Identify which phase of matter would transmit light waves the fastest, and why? a) the gas would transmit the fastest because the particles move the fastest. b) the solid would transmit the fastest because the particles are closest together. c) the liquid would transmit the fastest because the particles are the most freely moving. d) the gas would transmit the fastest because there are the fewest particles to interfere with the waves.

Light is actually both a particle and a wave. It is essentially made of particles called photons which move or flow in waves. Due to it being a particle, its movement can also be hindered by other particles, hence the answer is:

D) The gas would transmit the fastest because there are the fewest particles to interfere with the waves.

answer: the correct answer is 1.

explanation: there are various process in which a radioactive nuclei decays:

1) alpha decay: in this process, a heavier nuclei decays into lighter nuclei by releasing alpha particle. the mass number is reduced by 4 units.

2) electron capture: in this decay process, a parent nuclei absorbs an electron and gets converted into a neutron. simply, a proton and an electron combines together to form a neutron. mass number does not change in this process.

3) gamma ray emission: it is a decay process in which an unstable nuclei gives excess energy by a spontaneous electromagnetic process. this decay releases . this process does not change the mass number.

4) positron emission: it is a type of decay process, in which a proton gets converted to neutron and an electron neutrino. this is also known as -decay. in this the mass number remains same.

from the above information, we see that only alpha-decay is producing a change in the mass number of the nucleus.

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge