Answer:
Doppler Theory
Explanation:
it's a theory regarding the change in wave frequency during the relative motion between a wave source and its observer.
- <em>length </em><em>=</em><em><u>meters</u></em>
- <em>power </em><em>=</em><em> </em><em><u>watt</u></em>
- <em>force </em><em>=</em><em> </em><em><u>Newton</u></em>
- <em>Energy </em><em>=</em><em> </em><em><u>calorie</u></em>
- <em>Temperature </em><em>=</em><em> </em><em><u>celcius </u></em><em><u>scale</u></em>
<em><u>hope </u></em><em><u>it</u></em><em><u> helps</u></em>
<em><u>correct</u></em><em><u> me</u></em><em><u> if</u></em><em><u> </u></em><em><u>I'm</u></em><em><u> </u></em><em><u>wrong</u></em>
When two or more atoms chemically bond together, they form a molecule. Sometimes the atoms are all from the same element. For example, when three oxygen atoms bond together, they form a molecule of ozone (O3). If a molecule forms from atoms of two or more different elements, we call it a compound.
When any material is placed into a magnetic field its atoms acquire an induced magnetic moment pointing in a direction opposite to that of the external field. The material becomes magnetic
Put it in your own words