A potassium atom (atomic number 19) and a bromine atom (atomic number 35) can form a chemical bond through a transfer of one ele
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First, let's convert the initial angular speed from rpm (rev/min) into rad/s, keeping in mind that 
and 1 min=60 s:
Now we can find the angular acceleration of the lp, keeping in mind that the final speed is zero:
and the acceleration is negative because the LP is decelerating.
Now we can find the angle covered by the LP from the beginning to the end of its motion:
And finally, we can convert it into number of revolutions:
Now we can find the angular acceleration of the lp, keeping in mind that the final speed is zero:
and the acceleration is negative because the LP is decelerating.
Now we can find the angle covered by the LP from the beginning to the end of its motion:
And finally, we can convert it into number of revolutions: