10cm per beat, it would take 3 beats to travel 30cm x
<u>electrial</u><u> </u>
<u> </u><u>In an electrical circuit, electric current flows through the closed path</u>
<u>magnetic</u><u> </u><u>circuit</u><u> </u>
<u>In the magnetic circuit, magnetic flux flows through the closed path</u>
Hot body will lose heat from it, and that heat will goes out from it through radiation, so it's temperature will decrease after some time.
In same manner, cold body will take the heat, and it's temperature will increase
Hope this helps!