The number of oscillations of the toy in a second is 1.25.
<h3>What is frequency?</h3>
- This is the number of complete oscillation of an object is a given period.
The given parameter:
- Frequency of the toy, F = 1.25 Hz
The frequency of an object is calculated as follows;

where;
- n is the number of oscillations
- t is the time of motion
The number of oscillations of the toy in a second is calculated as follows;

Learn more about frequency here: brainly.com/question/10728818
If there's enough Hydrogen in the cloud, then fusion reactions
will ignite in the core, and it'll become a star.
The equation of GPE is mgH, where m is mass, g is gravitational acceleration, and H is the height.
If we're solving for the change in GPE, then:
∆
= mg∆H
<u>Input our given values for m and g:</u>
∆
= 0.25 * 9.80 * ∆H
<u>The book falls from 2 meters high to 0.5 meters high, so:</u>
∆
= 0.25 * 9.80 * (2.0 - 0.5)
∆
= 0.25 * 9.80 * 1.5
∆
= 3.675 (J)
<u>Adjust for significant figures:</u>
∆
= 3.7 (J)
The change in gravitational potential energy was 3.7 (J)
If you have any questions on anything I did to get to the answer, just ask!
- breezyツ
Converting
releases
absorbs
cooling
transfer
liberating