Question

Physics If a record player spins a record at 2.9 rad/s and completes 8.3 full turns before stopping when it is turned off how long does it take to stop
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Answer 1

Explanation:

1 mole of MgO contains Avogadro's number of molecules which is 6.023×10

23

molecules.

0.5 mole of MgO will contain 0.5×6.023×10

23

=3.0115×10

23

molecules.