Answer:
A time period is denoted by 'T' . It is the time to complete one cycle of vibration. As the frequency of a wave increases, the time period of the wave decreases. The unit for time period is 'seconds
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A coefficient is a number placed in front of a chemical symbol or formula that shows how many atoms or molecules of the substance are involved in the reaction.
B. The amount of work done by the worker on the wheelbarrow is 250 J.
<h3>Work done by the worker</h3>
The amount of work done by the worker on the wheelbarrow is calculated as follows;
W = Fd
where;
- F is applied force
- d is displacement
W = 50 x 5
W = 250 J
Thus, the amount of work done by the worker on the wheelbarrow is 250 J.
Learn more about work done here: brainly.com/question/8119756
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