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NikAS [45]
3 years ago
10

Materials that offer little opposition to electron motion are called _________________.

Physics
2 answers:
Nuetrik [128]3 years ago
8 0
I believe it is a conductor I am learning this myself so I may be wrong
WINSTONCH [101]3 years ago
3 0
<span>Materials that offer little opposition to electron motion are called </span>resistance.
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3 years ago
what did classical physics predict would happen to the light given of by an object as its tempurtare increased
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A 50.0 mg sample of an unknown radioactive substance was placed in storage and its mass measured periodically. After 19.7 days,
PilotLPTM [1.2K]
<h2>Answer: 4.928 days </h2><h2 />

Explanation:

This problem can be solved using the <u>Radioactive Half Life Formula: </u>

<u></u>

A=A_{o}.2^{\frac{-t}{h}} (1)

Where:

A=3.13mg is the final amount of the material

A_{o}=50mg is the initial amount of the material

t=19.7days is the time elapsed

h is the half life of the material (the quantity we are asked to find)

Knowing this, let's substitute the values and find h from (1):

3.13mg=(50mg)2^{\frac{-19.7days}{h}} (2)

\frac{3.13mg}{50mg}=2^{\frac{-19.7days}{h}} (3)

Applying natural logarithm in both sides:

ln(\frac{3.13mg}{50mg})=ln(2^{\frac{-19.7days}{h}}) (4)

-2.77=-\frac{19.7days}{h}ln(2) (5)

Clearing h:

h=\frac{-19.7days}{-2.77}(0.693) (6)

Finally:

h=4.928days

6 0
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Answer:

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