I think it is c
But there could be some other people that think differently
Answer:
773.25 Hz
Explanation:
Concept : In an open organ pipe in fundamental mode of vibration
wave length of wave λ = 2L
where L is length of the pipe
frequency = velocity of sound / λ
Given values: fundamental frequency = 288 Hz
fluid is air. velocity of sound = 340 m/s
⇒ 288 = 340/2L
⇒L = 59.02 cm
The point to be noted is if the pipe is filled with helium initially at the same temperature, there would be change in the sound velocity .Then, frequency of note produced will also be changed .
We know that velocity of sound is inversely proportional to square root of molar mass of gas
velocity of sound in air / velocity of sound in helium = Square root of (Molar mass of Helium/ molar mass of air)
![\frac{V_a}{V_{He}} = \sqrt{\frac{4}{28.8} } \\\frac{340}{V_{He}} =0.3725\\V_{He} =912.5 m/s](https://tex.z-dn.net/?f=%5Cfrac%7BV_a%7D%7BV_%7BHe%7D%7D%20%3D%20%5Csqrt%7B%5Cfrac%7B4%7D%7B28.8%7D%20%7D%20%5C%5C%5Cfrac%7B340%7D%7BV_%7BHe%7D%7D%20%3D0.3725%5C%5CV_%7BHe%7D%20%3D912.5%20m%2Fs)
Now, frequency = velocity of sound / λ
= 912.75 / (2 x 0.5902)
= 773.25 Hz
A. The average kinetic energy of their particles is the same.
Explanation:
The temperature of an object is proportional to the average kinetic energy of its particles, following the relationship:
![E_k = \frac{3}{2}kT](https://tex.z-dn.net/?f=E_k%20%3D%20%5Cfrac%7B3%7D%7B2%7DkT)
where
is the average kinetic energy of the particles
k is the Boltzmann constant
T is the absolute temperature
From this relationship, therefore, we see that the average kinetic energy of the particles in a substance depends only on its temperature: therefore, since the two pieces of iron have same temperature, they also have same average kinetic energy.
Answer:
The ability of our bodies to adapt to different levels of gravity. You would become weaker and your heart is use to zero gravity. Boredom because there isn't much to in space. When intelligent people get bored, it's not pretty all the time...