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sineoko [7]
3 years ago
12

NEED HELP ASAP PLEASSS

Physics
1 answer:
masya89 [10]3 years ago
6 0

Answer:

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Explanation:

ndyfyyfhdjfjjfhsjxjjffjjdjfhfjghfhghfuufurjhxxy6dirhxyryruhc

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Whitch of the following is likely the best electrical insulator
liberstina [14]
Silver is best conductor with copper close behind.

best insulator depends on application. Teflon is best for very small currents, ceramic is probably best for high voltage, although a vacuum is also very good.
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3 years ago
The period of a pendulum is measured 16 times. The average value of the period over these 16 trials is calculated to be 1.50 sec
marin [14]

Answer:

The additional trials needed is 48 trials

Explanation:

Given;

initial number of trials, n = 16 trials

the standard deviation, σ = 0.24 s

initial standard error, ε = 0.06 s

The standard error is given by;

\epsilon = \frac{\sigma}{\sqrt{n} }

To reduce the standard error to 0.03 s, let the additional number of trials = x

0.03= \frac{0.24}{\sqrt{n+x} } \\\\0.03= \frac{0.24}{\sqrt{16+x} }\\\\0.03\sqrt{16+x} = 0.24\\\\\sqrt{16+x} = \frac{0.24}{0.03} \\\\\sqrt{16+x} = 8\\\\16+x = 8^2\\\\16+x = 64\\\\x = 64 -16\\\\x = 48 \ trials

Therefore, the additional trials needed is 48 trials.

6 0
3 years ago
Conclusion for ohm law
kari74 [83]
Ohm’s Law states that electrical current is proportional to voltage and therefore inversely proportional to resistance - V = I x R
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A car is moving at 76 miles per hour. the kinetic energy of that car is 5 × 105 j. how much energy does the same car have when i
valentina_108 [34]
Its would be 144. cause if u think about it
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Which of the following planets helped astronomers locate another planet?
worty [1.4K]

Answer: Pluto,Mercury

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3 years ago
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