Answer:
200 cm
Explanation:
To find the wavelength of the least sound produced by the air column, you take into account that for the first mode you have that the wavelength is four times the length of the column:
This is because the sound is reflected in the column in such a way that only one quarter of the wavelength of the sound, allows one to obtain a mode of resonance into the air column.
Furthermore, this correspond to the least frequency because in this system the frequency is given by:
It is clear that for n=1 you obtain the least frequency.
By replacing the value of L you obtain:
hence, the wavelength is 200 cm
Answer:
It may seem like the obvious answer, but the larger one...
The diffusion coefficient of the gas is proportional to the average rate of thermal motion of the molecules.
the average velocity is inversely proportional to the square root of the molar mass
so
The gas diffusion rate is inversely proportional to the square root of its molecular weight.
Explanation:
Given that,
Mass of the object, m = 7.11 kg
Spring constant of the spring, k = 61.6 N/m
Speed of the observer,
We need to find the time period of oscillation observed by the observed. The time period of oscillation is given by :
Time period of oscillation measured by the observer is :
So, the time period of oscillation measured by the observer is 5.79 seconds.
Answer:
1.1 V
Explanation:
L = 0.45 m
d = 0.11 m
B = 0.80 T
t = 0.036 s
Let e be the emf.
e = B v L
e = 0.80 x 0.11 x 0.45 / 0.036 = 1.1 V