A parallel-plate capacitor connected to a battery becomes fully charged. After the capacitor from the battery is disconnected, t
1 answer:
Answer:
The correct answer is D.
Explanation:
Parallel Plate Capacitors are made up of two plates that are connected to each other and there is a set distance between them which is filled with various materials such as air, mika or paper etc. which all affect the capacitance of the capacitor which is it's ability to store electrical charge.
According to the capacitance formula where C is the capacitance, k is the value of permittivity of the material between the plates, A is the surface area of the plates, E is the constant value of permittivity of free space and d is the distance between the plates, if we double the value of d, the energy stored in the capacitor will be decreased to half of its original value.
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1) Distance: 9 m, displacement: +5 m
2) The average speed is 3 m/s
3) The average velocity is +2 m/s
Explanation:
1)
We start by reminding the definitions of distance and displacement:
- Distance: it is the total length of the path covered by an object, regardless of the direction of motion
- Displacement: is the distance in a straight line between the initial position and final position of motion
Let's now analyze the motion represented in the figure:
Initial position:
Intermediate position:
Final position:
Therefore, the distance covered is
While the displacement is:
2)
The average speed is a scalar quantity defined as
where
d is the distance travelled
t is the time taken
For the object in this problem,
d = 6 m
t = 2 s
Substituting, we find the average speed:
3)
The average velocity is a vector quantity defined as
where
d is the displacement
t is the time interval
For the object in this problem,
d = +12 m
t = 6 s
Substituting, we find the average velocity:
Where the positive sign + indicates the direction of the velocity vector.
Learn more about average speed and average velocity:
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Answer:
So the two wavelength range will over lap
Explanation:
The Rydberg equation is given by
m is the mass of electron
k = 1/4π∈₀
∈₀ = is the permitivity of free space
e is the charge of electron
h is the plank constant
c is the speed of light in vaccum
z is the atomic number = 1
where R is the Rydberg constant = 1.097373 × 10⁷m⁻¹
For Paschen series of H spectrum
in Paschen series of H spectrum
The maximum wavelength occur for
The minimum wavelength occur for = ∞
The brackett series of H spectrum
The maximum wavelength occur for
The minimum wavelength occur for = ∞
So the two wavelength range will over lap