Sensors, like the wheel on the iolab unit, are used ubiquitously in everyday life to measure motion. they come in many different forms and styles. besides the iolab unit, describe one place or an instance where you encounter sensors to measure kinematics. if possible, find an internet resource about the sensor or situation, and contribute to the class’s understanding.

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.

a sonic boom is a loud boom that breaks the sound barrier

explanation:

well clustered together.

points close on a scatter diagram