Answer:
The potential energy in the water will be 0.0769 mJ
Explanation:
We know that energy stored in the capacitor due to charge is given by ![U=\frac{Q^2}{2C}](https://tex.z-dn.net/?f=U%3D%5Cfrac%7BQ%5E2%7D%7B2C%7D)
From the relation we can see that potential energy is inversely proportional to the capacitance
And we also know that capacitance is directly proportional to the dielectric constant
So the new potential energy will be ![=\frac{6}{78}=0.0769mJ](https://tex.z-dn.net/?f=%3D%5Cfrac%7B6%7D%7B78%7D%3D0.0769mJ)
So the potential energy in the water will be 0.0769 mJ
Good morning.
Yes, it is possible.Energy is a scalar quantity. The value of the potential energy is calculated the following way:
![\mathsf{E_{p} = m\cdot g\cdot h}](https://tex.z-dn.net/?f=%5Cmathsf%7BE_%7Bp%7D%20%3D%20m%5Ccdot%20g%5Ccdot%20h%7D)
Where
m is mass,
g is the acceleration of gravity and
h is the height.
Note that the height depends on the adopted referential, therefore, if we adopt, for example, a referential on the floor, if we dig a hole that has a depth of 1 meter, a ball that is put inside the hole will have negative potential energy due to the adopted referential, since
h is negativa in this case.
Given Information:
Index of refraction of glass = n₂ = 1.42
Angle of reflection = θ₁
Angle of refraction in terms of angle of reflection = θ₂ = 0.5θ₁
Required Information:
Angle of refraction = θ₂ = ?
Answer:
Angle of refraction = θ₂ = 44.76°
Explanation:
We know from the Snell's law that
n₁sinθ₁ = n₂sinθ₂
Where n₁ is index of refraction of air and n₂ is index of refraction of glass, θ₁ is the angle of reflection and θ₂ is the angle of refraction.
Assuming n₁ = 1
1*sinθ₁ = 1.42*sinθ₂
since θ₂ = 0.5θ₁
1*sinθ₁ = 1.42*sin0.5θ₁
1/1.42 = sin0.5θ₁/sinθ₁
sin⁻¹(1/1.42) = sin⁻¹(sin0.5θ₁/sinθ₁)
44.76° = 0.5θ₁
θ₁ = 44.76°/0.5
θ₁ = 89.52°
So the angle of refraction is
θ₂ = 0.5(89.52°)
θ₂ = 44.76°
The egg was dropped from a height of 24.7 m (free fall motion)
Explanation:
The motion of the egg is a free fall motion (uniformly accelerated motion), so we can use the following suvat equation:
![v^2-u^2=2as](https://tex.z-dn.net/?f=v%5E2-u%5E2%3D2as)
where
v is the final velocity
u is the initial velocity
a is the acceleration
s is the displacement
For the egg in this problem, we have:
u = 0 is the initial velocity
v = 22 m/s is the final velocity
is the acceleration of gravity
s is the vertical displacement (the height from which the egg was dropped)
Solving for s, we find:
![s=\frac{v^2-u^2}{2a}=\frac{22^2-0}{2(9.8)}=24.7 m](https://tex.z-dn.net/?f=s%3D%5Cfrac%7Bv%5E2-u%5E2%7D%7B2a%7D%3D%5Cfrac%7B22%5E2-0%7D%7B2%289.8%29%7D%3D24.7%20m)
Learn more about free fall here:
brainly.com/question/1748290
brainly.com/question/11042118
brainly.com/question/2455974
brainly.com/question/2607086
#LearnwithBrainly
It makes the data thet they collect more reliable so if they need the data again, they have already tested it a few times so therefor they know that it is right.