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marin [14]
3 years ago
7

Check b and c plz :DD

Physics
2 answers:
Inga [223]3 years ago
4 0
Both of your answers are correct
marshall27 [118]3 years ago
4 0
Both are correct answers
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Two identical closely spaced circular disks form a parallel-plate capacitor. Transferring 2.1×109 electrons from one disk to the
Bad White [126]

Answer:

d = 0.018 m

Explanation:

Charge on the plates of the capacitor due to transfer of electrons is given as

Q = Ne

here we know that

N = 2.1 \times 10^9

so we have

Q = (2.1 \times 10^9)(1.6 \times 10^{-19})

Q = 3.36 \times 10^{-10} C

now we have electric field between the plates is given as

E = \frac{Q}{A\epsilon_0}

here we have

1.5 \times 10^5 = \frac{3.36 \times 10^{-10}}{A(8.85 \times 10^{-12})}

A = 2.53 \times 10^{-4} m^2

now we have

A = \frac{\pi d^2}{4}

2.53 \times 10^{-4} = \frac{\pi d^2}{4}

d = 0.018 m

3 0
3 years ago
The Earth revolves around the sun in a nearly circular orbit. Please select the best answer from the choices provided T F
Verdich [7]
The Earth does revolves around the sun in a nearly circular orbit so the answer is T
6 0
3 years ago
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What form of energy does a compressed spring have?
Katen [24]
Potential energy.. it stores energy when it is in compressed form...
3 0
3 years ago
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Felipe drives his car at a velocity of 28 m/s. He applies the brake, which slows the vehicle down at a rate of 6.4 m/s2 and caus
Dmitry_Shevchenko [17]

Answer: it takes 4.375 s for the car to stop

For this case we have that the final speed is given by:

Where,

a: acceleration

vo: initial speed

t: time

Clearing the time we have:

Substituting values we have:

Answer:

it takes 4.375 s for the car to stop

Explanation:

4 0
4 years ago
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Need help ASAP
Ksenya-84 [330]

Answer:

A, B and D

2. A

Explanation:

1.Which of the following statements about light waves is true? check all correct answers

A.They come from sources across space reason is that a light can travels form its source and its moves across the space

B.They travel in a straight line from their source reason is that the type of light that undergo these is called parallel ray of light

C.They can travel through any type of material reason not all materials light can penetrate through e.g wall

D.They can be reflected by some types of material reason is that some materals reflect light rays e.g polished mirror

4 0
3 years ago
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