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Nataly_w [17]
3 years ago
5

Two capacitors are identical, except that one is empty and theother is filled with a dielectric (κ = 3.60). The empty capacitor

is connected to a24.0 V battery. What must be thepotential difference across the plates of the capacitor filled witha dielectric such that it stores the same amount of electricalenergy as the empty capacitor?
Physics
1 answer:
emmainna [20.7K]3 years ago
3 0

Answer:

Explanation:

Given

Two capacitor are identical such that one is empty and other is filled with dielectric

Inserting a dielectric increases the capacitance k times if k is the dielectric strength

Empty capacitor C_1=C

Dielectric capacitor C_2=k\times C=3.6C

V_1=24 V

Energy stored in first capacitor E_1=\frac{1}{2}CV^2=\frac{1}{2}\times C(24)^2

Energy stored in second capacitor E_2=\frac{1}{2}\times 3.6C\times (V)^2

E_1=E_2

\frac{1}{2}\times C(24)^2=\frac{1}{2}\times 3.6C\times (V)^2

V=12.64\ V    

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gogolik [260]

Answer:

A. Zero

Explanation:

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Since the normal of the area is parallel to the magnetic field, θ = 0

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2 years ago
In noisy factory environments, it's possible to use a loudspeaker to cancel persistent low-frequency machine noise at the positi
Vaselesa [24]

Answer:

7.39 m or 3.61 m

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Path difference of the two waves is given by

s_1-s_2=\frac{\lambda}{2}

Velocity of wave

v=f\lambda\\\Rightarrow \lambda=\frac{v}{f}\\\Rightarrow \lambda=\frac{340}{90}\\\Rightarrow \lambda=3.78\ m

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So, the location from the worker is 7.39 m or 3.61 m

7 0
3 years ago
A kid applies a force of 70 N to a ball over 1.1 meters. How much work did he do on the ball?
LekaFEV [45]

Answer:

77J

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8 0
3 years ago
In a physics lab, Asha is given a 10.7 kg uniform rectangular plate with edge lengths 67.3 cm by 53.5 cm . Her lab instructor re
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Answer:

I=2.6363\ kg.m^2

Explanation:

Given:

dimension of uniform plate, (0.673\times 0.535)\ m^2

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Now we find the moment of inertia about the center of mass of the rectangular plate is given as:

I_{cm}=\frac{1}{12} \times m(L^2+B^2)

where:

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B= breadth of the plate

I_{cm}=\frac{1}{12} \times 10.7\times(0.673^2+0.535^2)

I_{cm}=0.6591\ kg.m^2

We know that the center of mass of the rectangular plane is at its geometric center which is parallel to the desired axis XX' .

Now we find the distance between the center of mass and the corner:

s=\frac{\sqrt{ (0.673^2+0.535^2)}}{2}

s=0.4299\ m

Now using parallel axis theorem:

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6 0
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