The number of oscillations of the toy in a second is 1.25.
The given parameter:
The frequency of an object is calculated as follows;
[tex]f = \frac{n}{t} \\\\[/tex]
where;
The number of oscillations of the toy in a second is calculated as follows;
[tex]1.25 = \frac{n}{1} \\\\n = 1.25[/tex]
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