Answer:
7 hectometers is 7000 decimeters
That is called fully constructive interference.
Answer:
an element is a pure substance whereas a compound is a mixture of two or more elements.
Answer:
α = 2Πft + 2Πx/¶
Explanation:
A transverse wave is one of the type of electromagnetic waves which occurs when the vibration of the medium is perpendicular to the direction of the wave. Mathematically, the wave equation according to the question
y1 = Asin(α).... (1)
since its characteristic wave gives a sine wave.
y1 is the vertical displacement
A is the amplitude.
The expression for α of the transverse wave on a string traveling along the positive x-direction in terms of its wavenumber k, the position x, its angular frequency ω, and the time t can be given as;
α = ωt+theta ... (2)
theta is the phase angle. This phase angle is a function of the position x of the wave and the wave number.
theta = kx
where k = 2Πx/¶... (3)
¶ is the wavelength.
ω which is the angular frequency is a function of the frequency (f) of the wave and it is given as;
ω = 2Πf... (4)
Substituting equation 3 and 5 into 2;
α = 2Πft + 2Πx/¶
Therefore,
y1 = Asin(2Πft + 2Πx/¶)
Answer:
The length is 
Explanation:
From the question we are told that
The length of the wire 
The mass is 
The tension is 
Generally the frequency of oscillation of a stretched wire is mathematically represented as

Where n is the the number of nodes = 3 (i.e the third harmonic)
is the linear mass density of the wire
This linear mass density is mathematically represented as
Substituting values


Substituting values in to the equation for frequency


From the question the we can deduce that the fundamental frequency is equal to the oscillation of a stretched wire
The fundamental frequency is mathematically represented as

Where
is the length of the pipe
v is the speed of sound with a value of 
Making
the subject of the formula
Substituting values


From the question the we can deduce that the fundamental frequency is equal to the oscillation of a stretched wire