Answer:
Erwin Schrödinger developed the quantum model of the atom. What scientific knowledge was necessary for Schrödinger's work? The discovery of the electron.
Explanation:
Answer:
Part(a): The capacitance per unit length of the capacitor is 
.
Part(b): The charge in the inner shell is 
and the charge of the outer shell is 
.
Explanation:
Part(a):
The capacitance (
) per unit length of a cylindrical capacitor is given by
where '
' is the permittivity of free space, '
' is the radius of the outer shell and '
' is the radius of the inner shell.
Given, 
and 
. We know, 
. Substituting the values in the above equation,
Part(b):
As the voltage on the inner conductor is higher than that of the outer conductor, positive charge resides on the inner shell and negative charge resides on the outer shell.
The charge '
' of a capacitor of length '
' having capacitance '' and potential difference '
' is given by
Given, 
and 
. Substituting these values in the above expression
The charge in the inner shell is and the charge of the outer shell is .
Answer:
20 m
Explanation:
Initial potential energy = final kinetic energy
mgh = 1/2 mv²
gh = 1/2 v²
h = v² / (2g)
Given v = 20 m/s and g = 10 m/s²:
h = (20 m/s)² / (2 × 10 m/s²)
h = 20 m
Answer:
Explanation:
Value of spring constant K = weight / extension
=
=512 ft s⁻²
Frequency of oscillation of spring mass system
= 
Putting the values we get
frequency
=![[tex]\sqrt{\frac{512}{32} }](https://tex.z-dn.net/?f=%5Btex%5D%5Csqrt%7B%5Cfrac%7B512%7D%7B32%7D%20%7D)
[/tex]
= 4 .
Time period = 1 / frequency = .25 s
No of vibrations in 4π second
= 
= 50 approx
When the weight is released 1 foot above equilibrium
PE stored = 1/2 K x² = .5 x 512 x 1 = 256 J
KE = 1/2 mv² = .5 x 32 x 4 = 64 J
Total energy = 320 J
Let x be the amplitude upto which spring stretches due to this energy
1/2 k x² = 320 ,
1/2 x 512 x² = 320
x = 1.12 ft approx
Answer: Find the answer in the explanation
Explanation:
The music playing on the radio will be heard through the sound waves coming from the radio.
The travelling wave will obey Newton's first law of motion which state that:
An object or particle will remain at rest or continue its linear motion in a straight line except an external force is applied.
The external force through wind could affect the travelling of the sound waves. Since the wave is longitudinal wave. That is, it needs a medium (air) for its propagation.
