Answer:
t = 37 x 10⁻⁶ m
Explanation:
given,
Length of glass plate,L = 9.47 cm
wavelength of the light, λ = 585 nm
Number of bands, n = 127 bands
thickness of the hair, t = ?
When the light get refracted from the inner surface of glass the wavelength of the light does not changes.
But when the light is refracted from the outer surface there is a dark band which shows that the wavelength changes.
now,
For the first order of bright band has phase difference = λ/2
for nth order
p = 2 t
t = 37 x 10⁻⁶ m
Hence the thickness of the hair is equal to t = 37 x 10⁻⁶ m
Potential energy = mgh
So, energy gained
= mgh
= 70kg × (9.8m/s²) × 1000m
= 686000 kgm²/s²
= 686000 J
The number of protons in an atom is the same as its atomic number, which is found on its corresponding atomic symbol in the periodic table of elements. And as long as this atom has a neutral charge, than the number of electrons will be the same. If the atom does have a charge, like say, 2-, then subtract 2 from the number of protons to get the number of electrons.
For the number of neutrons, you have to memorize the isotopes available sometimes. But usually something like carbon 14 will have a total of (in this case) 14 total protons/neutrons. So subtract this number by the number of protons(6), and you have 8 neutrons.
Hope this helps!
Answer:
a.
b.
Explanation:
The frequency of a harmonic oscillator is given by the following formula:
----------------- equation (1)
a.
In order to double the frequency of this oscillator:
ω' = 2ω
m' = ?
Therefore,
using equation (1):
a.
In order to triple the frequency of this oscillator:
ω' = 3ω
m' = ?
Therefore,
using equation (1):