False, the pitch of a sound wave is NOT its wavelength
The pitch of sound is akin to frequency. This can be defined as the time that is taken by a wave to complete one cycle (wavelength).
Explanation:
While frequency and wavelength of a wave are related, the relative pitch of the sound can change without changing the wavelength of the wave. An example of this phenomenon is when you hear a wailing ambulance approaching you. The pitch is high as it approaches you but the pitch lowers when it passes you and teh ambulance moves away from you. The wavelength of sound waves did not change but the compression and stretching of the sound wavelengths, respectively, caused the difference in the pitch of the sound.
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Answer:
During an experiment, a student moves a cell from pure water to salted water. ... It will release water and shrivel. It will release water and burst.
By aerodynamics and hydrodynamics
Answer:
the extension of the beam over the ledge is
x = 4.24 kg
Explanation:
The length of the beam is L= 10 m
The mass of the beam is M = 280 kg
The mass of the student is m = 50 kg
For the equilibrium the net torque on the beam in
counterclockwise direction about the point of
pivot should be zero.
Στ = Mg(L/2 - x) - m×g×x = 0
Mg(L/2 - x) - m×g×x = 0
Mg(L/2 - x) = m×g×x
M(L/2 - x) = m×x
(280 kg)((10 m/2) - x) = (50 kg)(x)
calculating the value of x from the above equation we get
x= 4.24 Kg
the extension of the beam over the ledge is
x = 4.24 kg