What are the units for volume and/or mass? Please answer and explain clearly thanks!
1 answer:
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Answer:
Position at t= 4 seconds is 144 m
Explanation:
It is given that acceleration, a = 18 t, where t is the time.
We know that Velocity,
Substituting value of a,
Velocity,
We know that at t = 0, v = -12 m/s
So,
So velocity,
We also know that displacement,
Substituting value of v,
Displacement,
We know that at t = 0, particle is at origin, x =0.
So,
Displacement,
At t = 4 seconds
Position at t= 4 seconds is 144 m
Answer:
0.786 Hz, 1.572 Hz, 2.358 Hz, 3.144 Hz
Explanation:
The fundamental frequency of a standing wave on a string is given by
where
L is the length of the string
T is the tension in the string
is the mass per unit length
For the string in the problem,
L = 30.0 m
T = 20.0 N
Substituting into the equation, we find the fundamental frequency:
The next frequencies (harmonics) are given by
with n being an integer number and f being the fundamental frequency.
So we get: