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Andrew [12]
3 years ago
14

What material resists the flow of electrons but will allow some electrons to flow?

Physics
2 answers:
Elenna [48]3 years ago
5 0

Answer:

The answer is <em>semi- conducto</em>r (D)

Explanation:

galben [10]3 years ago
4 0

Your answer is

D. Semi- conductor

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Calculate the induced electric field (in V/m) in a 40-turn coil with a diameter of 11 cm that is placed in a spatially uniform m
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Answer:

Explanation:

Given that,

Number of turn N = 40

Diameter of the coil d= 11cm = 0.11m

Then, radius = d/2 = 0.11/2 =0.055m

r = 0.055m

Then, the area is given as

A =πr²

A = π × 0.055²

A = 9.503 × 10^-3 m²

Magnetic Field B = 0.35T

Magnetic field reduce to zero in 0.1s, t = 0.1s

so we want to find induce electric field. To find the electric field,(E) we need to find the electric potential (V).

E.M.F is given as

ε = —N • dΦ/dt

Where magnetic flux is given as

Φ = BA

Then, ε = —N • dΦ/dt

ε = —N • dBA/dt

ε = —NBA/t

Then, its magnitude is

ε = NBA/t

Inserting the values of N, B, A and t

ε = 40×0.35×9.503×10^-3/0.1

ε = 1.33 V

Then, using the relationship between Electric field and electric potential

V = Ed

ε = E•d

E = ε/d

E = 1.33/0.11

E = 12.09 V/m

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If a pedestrian walked 900 meters forward and 300 meters back
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B

Explanation:

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The frequency of a wave is the inverse of the wave's<br> wavelength<br> itude<br> perod<br> velocit
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A mass of 10kg is a point a on a table is moved to a point B.if the line joining A and is horizantal what is the done on the obj
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6 0
2 years ago
Read 2 more answers
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