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Lelu [443]
3 years ago
15

The current in a lightning bolt is 2.6 x 105

Physics
1 answer:
Harman [31]3 years ago
4 0

Answer:

The right solution is "10.66\times 10^5 \ C". A further explanation is given below.

Explanation:

The given values are:

Current,

I = 2.6\times 10^5

Time,

t = 4.1 s

As we know,

⇒ Q=I\times t

On substituting the given values, we get

⇒     =2.6\times 10^5\times 4.1

⇒     =1,066,000 \ C

⇒     =10.66\times 10^5 \ C

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What resistance is needed to cause a 20A current flow with a 100V battery?
timurjin [86]

Resistance = (voltage) / (current)

Resistance = (100 V) / (20 A)

<em>Resistance  =  5 Ω  (D)</em>

7 0
3 years ago
Read 2 more answers
Three charges, q1 = +2.06 x 10-9 C, q2 = -3.27 x 10-9 C, and q3 = +1.05 x 10-9 C, are located on the x-axis at x1 = 0, x2 = 10.0
lisov135 [29]

Answer:

The resultant force on charge 3 is Fr= -2,11665 * 10^(-7)

Explanation:

Step 1: First place the three charges along a horizontal axis. The first positive charge will be at point x=0, the second negative charge at point x=10 and the third positive charge at point x=20. Everything is indicated in the attached graph.

Step 2: I must calculate the magnitude of the forces acting on the third charge.

F13: Force exerted by charge 1 on charge 3.

F23: Force exerted by charge 2 on charge 3.

K: Constant of Coulomb's law.

d13: distance from charge 1 to charge 3.

d23: distance from charge 2 to charge 3

Fr: Resulting force.

q1=+2.06 x 10-9 C

q2= -3.27 x 10-9 C

q3= +1.05 x 10-9 C

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d13= 0,20 m

d23= 0,10 m

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F13=9,7335*10^(-8) N

F23=K * (q2 * q3)/(d23)^2

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3 years ago
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Answer:

The<u> heat transfer </u>model showed convection.

In the convection model, the red water on the bottom of the beaker <u>is hot</u>

This means that the water at the bottom of the beaker was <u> less dense than </u>the water near the top of the beaker.

Explanation:

<em>Convection</em> is the transference of heat energy by the movement (translation) of the particles of fluid (liquids or gases).

When the water on the bottom of the beaker is heated, it expands and becomes less dense.

The water near the top of the beaker is cold which makes it denser than the water at the bottom of the beaker.

Thus, the hot water from the bottom of the beaker will ascend  toward the top of the beaker, while the cold water on top will descend toward the bottom. As long, as there is a difference of temperature between the water on the bottom and on top of the beaker, there will be a continuous movement of the particles: cold particles from the top replace hot particles from the bottom that ascend, and when the cold particles are heated they will ascend and will be replaced by new cold particles. This continuous translation of hot and cold particles in fluids is the model of heat transfer by convection.

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Answer:

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