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4 years ago

12

Compare and contrast how observations and results can be used to support a conclusion to an experiment.

1 answer:

seropon [69]4 years ago

3 0

Answer:

Explanation:

Difference Between Observation and inference. Observation can be called as the process of gathering data and inference can be said to be a process of taking decisions about the gathered data. While Observation can be said to be a factual description, inference is an explanation to the collected data.

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3 years ago

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3 years ago

The density of mobile electrons in copper metal is 8.4 1028 m-3. Suppose that i = 4.6 1018 electrons/s are drifting through a co

Vesna [10]

Answer:

The time is 106.7 minute.

Explanation:

Given that,

Density $= 8.4\times10^{28}\ m^3$

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We need to calculate the drift velocity

Using formula of drift velocity

$v_{d}=\dfrac{I}{neA}$

$v_{d}=\dfrac{Ne}{tne\times\pi r^2}$

Put the value into the formula

$v_{d}=\dfrac{4.6\times10^{18}}{8.4\times10^{28}\times\pi\times(0.6\times10^{-3})^2}$

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We need to calculate the time

Using formula for time

$v_{d}=\dfrac{l}{t}$

$t=\dfrac{l}{v_{d}}$

Where, l = length

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Put the value into the formula

$t=\dfrac{31\times10^{-2}}{4.842\times10^{-5}}$

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Hence, The time is 106.7 minute.

7 0

3 years ago