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svetoff [14.1K]
2 years ago
15

Two electrodes (0.68 mm apart) in your car's spark plug are subject to a 3.5 kV potential difference. What magnitude electric fi

eld does this produce in the region between the two electrodes
Physics
1 answer:
Lubov Fominskaja [6]2 years ago
3 0

The magnitude of the electric field produced in the region between the two electrodes is 5.15 \times 10^6 \ V/m.

<h3>Electric field strength</h3>

The electric field strength produced in the region between the two electrodes is calculated as follows;

E = \frac{v}{d}

where;

  • v is the potential difference = 3.5 kV = 3,500 V
  • d is the separation distance = 0.68 mm

The electric field strength is calculated as follows;

E = \frac{3500}{0.68 \times 10^{-3}} \\\\E = 5.15 \times 10^6 \ V/m

Thus, the magnitude of the electric field produced in the region between the two electrodes is 5.15 \times 10^6 \ V/m.

Learn more about electric field here: brainly.com/question/14372859

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A sample contains 20 kg of radioactive material. The decay constant of the material is 0.179 per second. If the amount of time t
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Answer:

Explanation:

Given

N0 = 20kg (original substance)

decay constant λ = 0.179/sec

time t = 300s

We are to find N(t)

Using the formula;

n(t) = N0e^-λt

Substitute the given values

N(t) = 20e^-(0.179)(300)

N(t) = 20e^(-53.7)

N(t) = 20(4.7885)

N(t) =143.055

To know how much of the original material that is active, we will find N(t)/N0 = 143.055/20 = 7.152

About 7 times the original material is still radioactive

4 0
3 years ago
What should you do immediately if a boat motor catches fire?
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5 0
3 years ago
Water flows along a streamline down a river of constant width. Over a short distance, the water slows from speed v to v/3. Which
kvasek [131]

Answer:

a. It became deeper by a factor of 3.

Explanation:

What we have is water flowing down a river with constant width. The water slows from speed v to v3 over a shirt distance

Using the equation of continuity

A1V1 = A2V2 ----1

A1 is the area of rectangle

V1 is the velocity of water

Area of rectangle = length x width

We rewrite equation 1 as

λ1w1v1 = λ2w2v2

We have w1 = w2

λ1v1 = λ2v2

λ1*v1 = λ2*v/3

λ1 = λ2/3

So it becomes deeper by a factor of 3

8 0
3 years ago
Which of these is equivalent to the law of conservation of energy?
zalisa [80]
The answer is D.
C and A are incomplete as they only treat specific types of energy, and B doesn't answer the question.
7 0
3 years ago
in california the pacific plate slides past the north american plate. If the pcific plate is moving at a speed of 5 centimeters
frozen [14]

Answer:

6.34×10⁹ seconds

Explanation:

Applying,

V = d/t............. Equation 1

Where V = speed plate, d =  distance covered by the plate, t = time it takes the plate to travel

make t the subject of the equation

t = d/V............ Equation 2

From the question,

Given: d = 5 cm/yr = (5×3.154×10⁻⁹) = 1.577×10⁻⁸ m/s,  d = 100 meter

Substitute these values into equation 2

t = 100/1.577×10⁻⁸

t = 6.34×10⁹ seconds

Hence the time it takes the the plate to travel is 6.34×10⁹ seconds

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3 years ago
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