How does the law of conservation of energy relate to the system shown in this model
2 answers:
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Answer:
9.34 N
Explanation:
First of all, we can calculate the speed of the wave in the string. This is given by the wave equation:
where
f is the frequency of the wave
is the wavelength
For the waves in this string we have:
, since it completes 625 cycles per second
is the wavelength
So the speed of the wave is
The speed of the waves in a string is related to the tension in the string by
(1)
where
T is the tension in the string
is the linear density
In this problem:
is the mass of the string
L = 0.75 m is the its length
Solving the equation (1) for T, we find the tension:
Answer: Yes
Explanation:
Velocity is defined as the distance traveled
in a specific time
:
If you are traveling at a distance
, then the time it will take you to be at work is:
This means you will make it on time, because this time is less than 0.25 h.