The answer is D) <span>Water has a high heat capacity.</span>
Answer:
8.77×10⁻⁵ m
Explanation:
ω = angular velocity = 3.49 rad/s = 33 rpm
r = Radius of the groove = 0.1 m
f = Frequency = 3.98 kHz
Tangential Velocity of record
v = ωr
⇒v = 3.49×0.1
⇒v = 0.349 m/s
The velocity of the wave is 0.349 m/s
v = fλ
∴ Wavelength in the groove is 8.77×10⁻⁵ m
The average speed in m/s of a person that jogs eight complete laps around a 400m track in a total time of 15.1 min is 0.44m/s.
<h3>How to calculate average speed?</h3>
Average speed of a moving body can be calculated by dividing the distance moved by the time taken.
Average speed = Distance ÷ time
According to this question, a person jogs eight complete laps around a 400m track in a total time of 15.1 min. The average speed is calculated as follows:
15.1 minutes in seconds is as follows = 906 seconds
Average speed = 400m ÷ 906s
Average speed = 0.44m/s
Therefore, the average speed in m/s of a person that jogs eight complete laps around a 400m track in a total time of 15.1 min is 0.44m/s.
Learn more about average speed at: brainly.com/question/12322912
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